My review of the Fitbit Flex

Hi friends! Hope you’re having a wonderful day <3 Thank you so much for Livi’s birthday wishes. It’s been fun to read your comments to her throughout the day ๐Ÿ™‚

Many people asked me to review my Fitbit Flex, so I figured it was perfect timing since Livi is napping and the house is ready for tonight’s little fiesta.

Just a head’s up: I paid for the Flex with my own $, and am not affiliated with the company in any way.

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I wanted a fitness tracker since I’m not teaching/assisting 15+ classes per week anymore and I’d be able to get an idea of my activity level. On one hand, I still feel extremely active because I’m chasing Livi around and still getting in regular workouts, but at the same time, I also feel very sedentary with the extra hours I’ve been sitting to work on the book and studying for my Weight Loss Specialist exam. (Random note: I start teaching Zumba again next week, just one class per week, but I CAN’T WAIT.) Last week, I ordered the Fitbit Flex after researching quite a bit online. I had narrowed it down to a few options (the Jawbone Up, Flex and Fitbit Force) and after reading that quite a few of you were happy with your Flex, I went ahead and ordered one. The slate color was marked down for $89 on Amazon, so I figured it was destiny ๐Ÿ˜‰

How’d I decide?

Fitness trackers are really glorified pedometers. They provide a variety of insightful data through their respective apps -I was most curious about my sleep patterns- and track movement help you to gauge your activity level throughout the day. I really love the design of the Jawbone Up, but had read online that quite a few people had issues with the quality and the customer service when their Up bit the dust. I also thought the fact that you actually have to plug it into your phone to sync was a bit of a hinderance and figured I’d prefer something with Bluetooth capabilities. That left me with the Force and the Flex, and I ended up going with the Flex. The tracker can be removed from the wristband, which is great because rubber wristbands tend to get gnarly after a bit of use, and it was smaller than the Force.

Fitbit One is another option, which clips onto your clothes (more like a traditional pedometer) but considering my propensity to lose things, it wasn’t really an option. Flex it was!

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It arrived the NEXT DAY (wahoo for Prime shipping!) and I couldn’t wait to test it out.

Now that I’ve had it for a few days, I thought I’d share some of my pros and cons.


-It tracks approximate mileage, steps, calories burned and sleep patterns for the day. If you’re a MyFitnessPal member, you can sync it with that app to track your food intake, too.

-I LOVE THE SILENT ALARM. For the silent alarm, the wristband vibrates a few times to wake you up. It’s amazing, and not as harsh as my angry iPhone alarm. 

-It’s pretty inconspicuous. A few people have asked me about it, but I don’t feel super nerded out wearing it. Of course, I’d never wear it with a pretty dress, but for every day, it works.


(when I accidentally matched my outfit to the Pilot’s)

-Easy to use and easy to set up. With the app, it pretty much runs itself. All I have to do is tap it twice to see how I’m doing -lights indicate whether you’ve reached your goal- or to tell it I’m going to sleep.

-Comfortable snug wristband. Each pack comes with a large and small wristband, which is extremely comfortable and secure. I haven’t had it fall off or anything like that. 


-While I like the fact that you can remove the tracker from the wristband, the thought of getting water in there skeeves me out. It says you can wear it while showering or swimming, but I’d be afraid to.

-It’s still kind of ugly. I think this is why the Jawbone has major appeal, and I’m excited to see some of the sleeker fitness trackers that will hit the market this year.

How accurate do I think it is?

While I think it’s less accurate than a heart rate monitor, for everyday, I think it makes more sense to wear a tracker and get a general idea of trends and patterns. You can always gauge improvement, whether the numbers are perfectly precise or not. I realized that it counts my crazy hand gestures as steps, but doesn’t count for much when I’m strength training, so it must balance out.

Some of the things I’ve noticed:

I especially love the sleep tracker. For the past few months, I’ve woken up feeling totally exhausted. I had blood work done because I thought something was wrong with me. Turns out, I’d been sleeping horribly. The first night I was restless 22 times! I don’t know if it’s a subconscious thing or what, but the past few nights I’ve been restless ONCE and have woken up feeling amazing.


It’s HARD to get in the recommended 10,000 steps per day. I’m a pretty active person, but on the days I don’t run, it’s challenging to reach that number, especially because Tucson isn’t a walking-friendly city. It’s very spread out, and you have to drive everywhere. Even with constant active play with Livi, in order to get to my 10,000 steps, I have to take Bella for a nice long walk and get in some kind of cardio for the day.

All in all, I’m really happy with it. I’ll let you guys know if anything changes, but that’s my initial review so far ๐Ÿ™‚

Do you have a fitness tracker or another method to gauge your activity level?

Fellow Fitbit friends, any pros or cons you noticed that I haven’t listed above?

Have a great night and I’ll see ya in the morning!



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  1. NC on January 9, 2014 at 3:35 pm

    I have been using my flex for the past couple of months and I use it in the pool . I swim twice a week and have not had any issues so far .

  2. Kat on January 9, 2014 at 4:44 pm

    I got my flex a month ago and absolutely love it. It gives me a pretty good idea of how good or not so good I’m doing that day. I also love the sleep tracker. Since having my youngest daughter I have not gotten a whole lot of rest and the tracker really let me know that I am sleeping horribly which is why I have been feeling awful and relying on my coffee to get me through. Im on the verge of becoming a caw-fee addictโ€ฆseriously. 3-4 hours a day is what i have been averaging for the past month and pretty much two years..with interruption. Thanks to to fit bit, I’m now totally aware of how bad this isโ€ฆI have to say that I think I like the food log on my fitness pal better. My fitness pal seems to have more loaded for calorie count and the scan the box option is awesome too!

  3. Kayla @ Sealed With a Kay on January 9, 2014 at 4:45 pm

    I’ve been thinking about picking one of these up too. Great review, thanks!

  4. Sophie @ life's philosophie on January 9, 2014 at 4:46 pm

    I have been a FitBit user for years. I currently have the FitBit One and love it. It’s hard to remember to use it, but with the wireless syncing to my phone, I can see when the battery is low and it even prompts me to charge it! I went with the FitBit One because it’s discreet and doesn’t clash with any fashion ๐Ÿ™‚ The only complaint I have with the One is that in the summer, when I get really sweaty, it can malfunction and stop working. This has happened a couple times and, thankfully, they replace it for free! I’m interested in trying out the sleeping part…

  5. Krysta on January 9, 2014 at 5:37 pm
    • Fitnessista on January 9, 2014 at 5:45 pm

      I SIGNED UP!! so exciting ๐Ÿ™‚

    • Madeline on January 10, 2014 at 11:36 pm

      Thank you so much for sharing this! Can’t wait!!

      • Mel on July 15, 2014 at 11:29 pm

        So I am not all that crazy about the very limited Tory Burch FitBit line, and also think its a little too expensive. I got a great bracelet from that totally hides my FitBit, I wear it almost every day, it is simple and silver it goes with everything, plus it only cost about $40.

  6. erica on January 9, 2014 at 5:56 pm

    I got a fitbit flex a few months back. I’m glad that even you find it hard to get in the 10,000 steps! I thought I struggled because I work at a desk all day and I was getting really frustrated. lol.

    I love how it keeps me aware though!

  7. katie on January 9, 2014 at 11:46 pm

    It’s pretty ugly. (Thanks for the link to the Tory Burch site, Krysta – I’m all signed up too!)

    I don’t like the food logging… I used to use Noom, and this is just a horrible food database in comparison. (Will someone please tell me what a gram of mashed potatoes looks like?!) So often I end up ‘adding’ a food and just putting in the calories off the label because it’s actually easier to start from scratch.

    It doesn’t track lowe- movement workouts well – yoga, or even Tabata or boot camp don’t give me much of a blip. But I kill calories folding laundry, so…

    That said…

    Since I’m no ultra-athlete, it’s good enough as a trend of how active I am day to day. It really does cause me to walk the long way to the printer!

    And I love – make that LOVE LOVE LOVE – the alarm. I thought it might not wake me up, and had my regular alarm set as a backup the first night. But it totally wakes me, and in such a better way than a blaring alarm. And I don’t wake up every 5 minutes to check the time on those mornings I end up with a kid in bed with me, because I don’t have to worry that my alarm going off will wake them! Love.

    Wow. Rambling comment. Apologies!

    • Fitnessista on January 10, 2014 at 11:11 am

      the alarm is one of my favorite parts, too. sometimes my phone alarm will wake liv up, so i’m glad it works and is a little friendlier ๐Ÿ™‚ good to know that laundry counts haha

    • Angela on January 17, 2015 at 2:42 pm


      have you ever tried “myfitnesspal” for food tracking? It connects to fitbit as well. Just a thought. I use it and love it. You can add your own recipes and the database is pretty all encompassing.

  8. Nenelle Demos on January 10, 2014 at 1:02 am

    I have the Fitbit Flex and know what you mean about it being a little unattractive. I take the tracking chip out of the wrist band and put it in my bra when I’m at work and it tracks perfectly from there. I have been doing this for a couple of months with no issues, you just need to remember when you take your bra off!

    • Fitnessista on January 10, 2014 at 11:10 am

      awesome tip- i’ll try that!

    • Tina on April 7, 2014 at 5:56 pm

      So glad to hear that someone slips the tracking chip in their bra. I’ve been thinking about doing that but was afraid it would stop working.

    • Jennifer on July 30, 2014 at 10:46 am

      Do you have a pocket or clip that you use or just stick it in your bra? I think I’d be afraid that it would fall out and be checking to make sure it was still there…probably drawing more attention that the wrist band. ๐Ÿ™

  9. Maureen on January 10, 2014 at 9:09 am

    I don’t think it’s ugly . . . and it looks like it would fit a small wrist comfortably – I can never buy anything for my wrist that isn’t adjustable – and even some things that are adjustable are too big – that would be my only concern. I would like it to be snug and not spin around. Thanks for taking the time to share your review – very helpful!


    • Fitnessista on January 10, 2014 at 11:09 am

      thank you, friend! hope you have a great weekend <3

    • Amy on January 14, 2014 at 4:58 pm

      I have a small wrist as well, 5 1/2″, but don’t worry, it fits. The starter kit does come with a small wrist band and i think you will find, like i have, that it fits perfect and doesn’t spin. The way the “bit” fits into the band, it doesn’t really allow for spinning.

  10. Kelsey @ Ramblings of Change on January 10, 2014 at 11:16 am

    I love fitness trackers, and bought the Jawbone UP last February…before all the reviews starting coming out. I’ve had to replace it 3 times already (the company has been great about doing the exchanges for free), but I think in the future, I’ll go with something else until things get improved a little more.

  11. Eloise on January 10, 2014 at 2:35 pm

    I got mine for Christmas and was just loving it, I logged all my food Dailey for the last two weeks, had it set to lose weight slowly. Each day fitbit app telling me how many calories I have left..doing great…then I weighed in this AM to find out I gained two pounds! Checked the app site to find out all the calorie numbers CHANGED to show I went over each day. I am not sure what happened, but I am thinking along the lines that somehow it lost connection to the app. Can anyone throw some light on my issue. I love the idea but it has to be accurate.

  12. Anna S. on January 10, 2014 at 3:47 pm

    I have the FitBit Zip, which is super tiny ( and hooks onto your bra. It’s cheaper and doesn’t record sleep, but I’ve found it pretty accurate and it, too, uses Bluetooth to the phone app. I love it! It’s about $50 so a nice option for a little less moola.

    • Fitnessista on January 10, 2014 at 5:15 pm

      that’s awesome- thank you!

    • Sania on December 3, 2014 at 2:02 pm

      I would really like to try these fitbit products. I just haveone question , whether the zip will accurately measure the calories burned while doing zumba classes or spinning?


  13. Meg on January 10, 2014 at 4:09 pm

    Hi Gina,

    I am so glad you covered this, because I have been thinking about getting one! One question, when it tells you about how many calories you have burned…do you try to eat within that range? I am a stay at home mom of two toddlers and one on the way and I exercise several times a week. I never know if I am eating enough or too much (sounds crazy, but some days I am exhausted and wonder if I have adequately refueled). I don’t know how to gauge how much to eat, etc. With another baby coming and the thought of breastfeeding, chasing 3 kids, and still trying to possibly make the bikini happen this summer, I am wondering if this would be a helpful tool. Any insight?

    • Fitnessista on January 10, 2014 at 5:15 pm

      i tend to naturally eat around 2000 calories, give or take. when i was teaching a ton, it was more like 3000.
      honestly, when it comes to breastfeeding and child wrangling, i’d go by hunger levels more than anything and make sure to drink a ton of water. the apps can be a good resource, too! congrats to you and your growing beautiful family ๐Ÿ™‚ xoxo

      • Meg on January 10, 2014 at 6:12 pm

        thank you ๐Ÿ™‚

  14. Madeline on January 10, 2014 at 11:40 pm

    I love my fitbit, which my husband gave me for Christmas. I love checking in to the dashboard periodically and seeing those big smiles at the end of the day! The most important benefit for me has just but been that it keeps me mindful and encourages me to take the stairs, walk instead of drive for short trips, etc. Of course you could save yourself the $100 bucks and just do that anyway… But I love it still ๐Ÿ™‚ It is is hideous, for sure, but it being winter in Seattle it’s almost always covered by my sleeves anyway. SO excited to hear about Tory Burch though!

    • Fitnessista on January 11, 2014 at 5:54 pm

      i was so excited about that too! she’ll make a gorgeous band for it

  15. Caitlyn on January 11, 2014 at 1:41 am

    I just bought one after your review :). I just started using it today and am already obsessed!! Which hand do you wear it on and do you set it as dominant or non-dominant? I am curious about sensitivity and can’t really find much info.

  16. Barbara on January 11, 2014 at 10:39 am

    Have you worn it while running? Is it accurate for mileage and calorie count?

    • Fitnessista on January 11, 2014 at 5:52 pm

      i wore it to run today and it was a MILE off. calorie burn seemed a little high, too

      • Lindsey on January 12, 2014 at 4:29 pm

        I had the flex for awhile and then recently upgrades to the force, which shows all your info on your band so you don’t need to keep checking your phone/computer. I just wanted to add really quick, since I LOVE my fitbit, that mine was off too but then I adjusted my stride length on the website. It made a big difference and is now much more accurate. I wasn’t sure if you had already done this or not, but thought i would mention it just in case. Love your site!

        • Fitnessista on January 12, 2014 at 5:49 pm

          ohhh, i’ll try that- thank you!
          thank you for reading, too ๐Ÿ™‚

  17. Melissa on January 12, 2014 at 10:10 pm

    Thanks so much for your review! I have been wanting one for a while now and after your review put one in my amazon cart then told my husband that’s what I wanted for my birthday. He wasn’t too sure so it waited a few days and decided I was going to buy it today, it had dropped $14 bucks! Glad I waited. Can’t wait to start using it. We went to one car and are moving on base so I’ll be walking a lot!

    • Fitnessista on January 12, 2014 at 11:40 pm

      so awesome! let me know what you think!

  18. Chris on January 13, 2014 at 5:51 pm

    Glad you guys all love your fitbits – my wife and I love ours as well. So much so that I set up a motivational site for fitbit users – trouble is getting people to join up and try it out. Where do you guys think we could reach other fitibit users like yourselves?

  19. Kimberly on January 24, 2014 at 6:59 pm

    Has anyone tried wearing the Flex on their ankle? (Does it fit? How comfortably or not so much?) And if so, have you noticed any particular differences?

    • Fitnessista on January 24, 2014 at 7:09 pm

      i was just wondering this today! (on the spin bike, pumping my arm like a giant goober haha)

  20. Chris on January 25, 2014 at 7:11 am

    Good review!

    I would also add as one of the cons that the battery life is shorter compared to others. On average it lasts about 5 days but it is shorter if you tap it more during the day. But I definitely like it more than the Jawbone because it’s so thin ๐Ÿ™‚

    Check out my review too!

  21. chelle on January 31, 2014 at 11:15 am

    I have contemplated the titbit for a while. When I first looked at them, my husband thought it was below my level of fitness (meaning I was exercising and tracking and doing great why bother). Since then I have had a few set back and I am struggling to get back into the groove. I am seriously a numbers girl, love tracking my runs with eh Nike app, so I think I am going to look at it again.
    Thank you for your thoughtful review of the product!

  22. Bill on February 8, 2014 at 10:06 am

    I love my Fitbit. I got it just after Christmas and have had no problems, even shower with it ( but take it off before the sauna). It is a great motivator for me to get out in the frigid winter weather to walk my Lab. It also motivates me as my daughter and Ex are friends and it shares our goal info. So far I’m kicking their butts It’s great for monitoring food intake also some generic foods are missing but it has many specific foods, like Medifast items. I’ve lost 15 lb since end of December. However, I don’t feel as it is as accurate as I would like. If I enter a walking activity, it seems to double counts my steps and miles (which may account for the 22000 steps and 10.2 miles I had one day). I think the calories may be too high also. I have the Flex but would like the Force since I do a lot of hiking in the mountains and would like that elevation data to better calculate my calories. Overall, I like the look and functions. It’s a great motivator.

  23. Tok39Larraby on March 3, 2014 at 5:31 am

    I upgraded myself from a zip to a flex.

    I must say that although I am pleased with it’s performance, I would now think twice about recommending one to a friend.

    I purchased my zip about 6 weeks ago and the band has just broken on me. It’s come away from the seam where it joins onto the main knobbly body bit. Luckily it just decided to ‘let go’ while I was typing an email. Unluckily for me I have misplaced my receipt. … Confident, to the point of cocky, that I wouldn’t have a problem with my Flex.

    I’ve heard others complain about the band but it wasn’t until I had to part with $45.00 for a replacement 3 pack that I nearly fell over. … I don’t abide well in having to pay 50% of the price of a zip for rubber that should have lasted more than 6 weeks. A quick google has revealed it’s not a rare occurrence. Whilst I don’t have a problem with Fitbit perse – their Flex product line needs a bit of rework.

  24. Denise on March 18, 2014 at 7:00 pm

    Since the fitbit comes with two bands can two people use one unit?

    • Fitnessista on March 18, 2014 at 7:19 pm

      you technically could, but it would be a pain to sync it for each person. only one person would be able to use it at one time

  25. Patty Havel on April 5, 2014 at 8:37 pm

    We’ll I love my fitbit flex but it doesn’t love me back. After talking with customer service yet again, I will be on my THIRD flex in less than a year. I wish it would last more than four months per device. I will say that their customer service is very good and quick to help but I just wish I had something that worked.

  26. Alma Sayles on April 9, 2014 at 12:52 pm

    Purchased my Fitbit Flex in July, 2013. Don’t expect this product to continue working for long. Within a few months light indicator stopped working. Contacted Fitbit and they replaced the Flex. Just in the last few weeks the same thing with the replacement. Will not charge and when it is charged only lasts a few hours. I walk with 3 other people weekly and two of the ladies Flex’s have stopped working. So in less than 9 months they need replacement. For $100 this monitor is a piece of “crap”. Good concept but needs to continue working for 9 months+. Manufacturer needs to engineer this to last. Look for something else.

  27. Liz on April 16, 2014 at 9:03 am

    I bought the Flex for my hubby in November ’13….he loves it, especially the sleep tracker. As much as he loves it – great app, easy to read reports….he hates it. The quality of the product is sub-par – replaced the wristband in 45 days of purchase, he is on his 3rd tracker: first one wouldn’t charge without him taping the tracker into the charger then it stopped charging altogether, it never properly fit the charger, #2 arrived in January – snapped into charger (yea) and worked until it didn’t late Feb (wouldn’t charge), #3 arrived in March – snapped in and charged (yea again), now back to taping it into charger so it will charge….my guess by May I’ll be asking for replacement #4-ugh! Regarding customer service – mixed, initial request had me jump through hoops (documentation/pictures) but they simply issued a replacement, subsequent replacements have been a simple email to CS and they sent me a new one… the product, hate the quality ~ frustrated user

  28. Danielle on June 16, 2014 at 11:41 pm

    I just purchased my Fitbit Flex over the weekend and hopefully it will be arriving this week! I am SO excited to use it because I’ve heard great things.

    Also, as far as looks go…Tory Burch is teaming up with Fitbit Flex to create jewelry that will hold the tracker so that you can wear it with your more stylish outfits. I am SO SO SO excited for that!

  29. Chelsea on June 30, 2014 at 2:31 pm

    I just found your website while specifically looking for a good review of the fitbit flex. I’m a nurse and am on my feet ALL DAY so I’ve been looking for a good activity tracker. Thanks for all of the great info. I will be purchasing one today and will definitely be following your blog from now on.
    Love it!

  30. Vicki on June 30, 2014 at 10:48 pm

    I am hoping to find out if anyone else has had issues with their fitbit not charging. I received mine for Christmas and have been wearing it religiously. I have two chargers and have tried them both leading me to believe the battery is no longer charging. I spoke to another person who saw my fitbit a few weeks back and said she had this same issue. I don’t see any way to change a battery. Will I need to spend $100 to replace it? I like it for all of the resins people have mentioned and am feeling lost without it. If I am needing to get a new tracker I am considering upgrading.

    • Susan Gericke on July 30, 2014 at 1:03 pm

      I’ve had mine for two months and absolutely love it. BUT, it will only charge for a few hours now. I really miss it and don’t look forward to going thru the Target extended warranty process. If I get a replacement I probably will consider putting it on my bra when I dress up. It does look a little odd on the same wrist as my watch.

  31. Sharon on July 17, 2014 at 5:23 pm

    I had (and I say had) a Fitbit Flex for 5 weeks. I loved it and used it while swimming and in the shower. During the five weeks I lost it 3 times because the clasp is not very tight. Needless to say the third time I lost it and could not retrieve it from the lake where we were boating. The other thing I discovered is that it did not track my activity during my spin class – I guess because my arm doesn’t do much in that class. I was going to try the bigger band the next class and put it on my ankle, but then I lost it. I really miss it but will probably not spend the money for another one.

  32. Kate on July 24, 2014 at 9:28 am

    I received my Flex two days ago, and while I am really happy with most of the product’s functionality, its appearance is changing. The edging is fading away, or turning black. Against the teal band that I ordered, I’d say it looks a year old already. I work in a professional office, and hate wearing something that looks tatty; in two days I’m a bit frustrated with how it looks. I’ve been wearing it normally, with a blazer and jumper, regular walking and showers, nothing rough at all.
    I hope there is something that can be done to remedy this, or else I’d probably return the product. Choosing to wear a device 24/7 was a huge commitment for me, and is won’t wear something that doesn’t look presentable. The teal band is actually cool, very modern and looks like a comfortable bangle.
    In two days, it’s taught me to get out after work and take a walk by myself. Pretty good advice from a bracelet.

  33. Charleen on August 3, 2014 at 8:36 am

    I love my Fitbit Flex! The only time I do not wear it is when I go swimming or in the shower. I wore it showering one time and had to restart it as it quit running. The reset was easy though; just plug it into the charger, take a small paper clip or pin and push it into the small reset hole on the back of the charger.
    Because I use an elliptical machine and the treadmill I place the data recorder in my bra so it will record my steps and active minutes.
    I have wondered about my sleep patterns but the Flex has laid that to rest, pun intended! I know I dream and understand that just because it shows I am restless, doesn’t mean I am not sleeping, just not deep sleeping. I average between 3.5 to 5 hours of good sleep per night the rest is restless with about 3 awake periods. I consider that good in an eight hour night. Never am tired during the day.
    I would buy another one again.

  34. Vicky on January 24, 2015 at 8:55 am

    Etsy has tons of accessories to dress up your fitbit. It also has some great gadgets for swimming and attaching your fitbit flex to your bra.

  35. Kaholly on April 15, 2015 at 10:58 am

    I found a great new product on called a Fitbit Strap Wrap, made to wear your Fitbit flex on your bra strap or t-shirt strap. It works great! I never really liked the wrist holder.

  36. Melan on April 25, 2015 at 1:47 pm

    I have the Fitbit One & it was tracking my steps at a slow pace vs. my friends that have the flex. So I now where it on my wrist & my arepa almost doubled!! So I am Leary of the accuracy of it when it counts my brushing.teeth hair or dogs as steps ! But now I get my 10k steps n 2x a week!

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