Trying to lose weight, prevent diabetes or get fit? Don’t struggle alone! Let Lark help you become your best self. Your personal Lark coach tracks your exercise, sleep, and diet, and texts you motivation and advice – whenever and wherever you need.

More than a million people love and trust Lark!
◆App Store- "Top 10 Apps of 2015"
◆Google “Best of 2016”
◆Lark, Uber, WeChat, Airbnb are “Top 10 Most Innovative Companies in the World”- Business Insider
◆"Lark acts both as a cheerleader and a coach...and ultimately feels like a friend"-Vogue

Lark Coach Options
◆Lark StayFit - Free activity and sleep tracking and coaching to help you stay fit.
◆Lark Pro - Personalized health plan, nutrition coaching,unlimited Check-ins
◆Lark Thrive Diabetes Prevention Program (DPP) - 16 week, CDC-approved program with educational content and customized coaching to help reduce your risk of diabetes. Free with many insurance plans.

What you get in your Pro Membership:
Personalized Health Plan: Lark provides a holistic, customized plan to help you build healthy habits.
24/7 Coaching: Packed schedule? Don’t sweat it. Your Lark coach will give you immediate feedback in 2 seconds, anytime, anywhere.
Flexible Nutrition Coaching: Intuitive, easy chats about your food choices and portions. No calorie counting or rigid dieting.
Automatic Exercise and Sleep Tracking: Lark monitors your exercise, sleep, weight and other health metrics in a simple dashboard.
Mood and Condition Check-ins: Have a sudden craving? Feeling tired or stressed? Share how you’re doing and your Lark Coach will provide tips and motivation.
Integration with Other Apps and Devices: Your Lark coach integrates and analyzes data from Apple Watches, wireless scales, Strava, Apple’s Health app and more.

What you get in your Thrive Membership:
Everything from Pro plus…
Additional Blood Sugar and Carbs Tracking
Tailored Educational Sessions on Diabetes and Related Topics
A Free Fitbit and Scale

Just trying to keep fit? Lark’s StayFit Coaching is free to use. Get automatic activity and sleep tracking and coaching for staying fit, or choose a premium paid membership.

Membership Pricing and Terms
Qualifying individuals can enroll in Lark Thrive DPP at *zero* cost
We offer a monthly Pro membership for $19.99. Cancel anytime. 7 day free trial!
Your Lark Pro membership will automatically renew at the end of each term and your credit card will be charged through your iTunes account. You can turn off auto-renew at any time through your iTunes account settings but Apple does not refund for any unused portion of the term.

Privacy Policy:

Terms of Use:

**Lark uses the low-power motion sensors unique to the iPhone 5s and above to track your activity and sleep data, then chats with you to help you improve. Therefore, In App Purchase is only available to users with iPhone 5S and above.**

What's New

Version 4.7.3

- improved performance and bug fixes

Ratings and Reviews

4.4 out of 5
1.6K Ratings
1.6K Ratings

Editors’ Notes

Losing weight is easier when you have a trusted pal to provide encouragement and valuable pointers. Lark is a fantastic virtual companion that chats with you like a friend, offering a clear look at your activity levels, meal choices, and even sleep patterns. There’s no calorie-counting here—just use plain language to tell Lark what you ate and how much you exercised, and it’ll let you know if you’re on the right track to weight-loss success. Smart, supportive, and nonjudgmental—we need more friends like Lark.

Becca Currie ,

Approved and Finally Using

Got approved straight away but it took a week before I could actually use Lark. Have a friend who signed up too, and same happened to her, just slightly less time - took her 3 days to be able to use Lark. Approval is nearly instant but something happens once you try to get going. It seems like the account takes extra time to actually create. In fact I got made a new account with a new email, thinking the other was ‘buggy’ but it probably turned out to be just an app issue not creating the account fast enough. I “think” I even tried online - but I can’t remember- it’s been a month!!!

1 month in, and I’m loving Lark!!! Not quite learning anything yet, but I’m expecting I’ll start learning new things I weren’t really knowledgeable about before!!

📌 I’m loving Lark- wish we could type some responses- wish it was more Siri-esk... as in open communication and Lark could open chat instead of prepackaged responses.

📌 I also wish we could archive the “convo” ... or rather, the information and knowledge that Lark bestows on us.

📌 I am still waiting on a water logging / drinks log feature that is separate from the food. Reason behind wanting this is because drinking fluids are also a part of weight loss and being healthy - especially with diabetes!!

Chupaloops ,

Not quite sure

So I came across this app/offer on Facebook and went for it since my insurance covers it. It’s been very confusing going between two providers to try and get to the free scale and Fitbit. Had a near six week back-and-forth trying to be recognized on the app and get my scale ordered when FINALLY that got worked out—though I’ve yet to receive the scale (it’s been a week so hoping in this next one I’ll get it). The scale is connected to Solera which monitors your app usage and sends the Fitbit. I should have that by now had things gone smoothly. Anyway, it looks like most folks do get their scale and Fitbit in a reasonable time period but that’s not been my experience at all. Customer support is slow but does respond. The app itself is ok. Looking for it to get stepped up and really give some helpful tips. I’m willing to give it a bit more time so I hope it all comes together and helps me reach my goals.


Lark Technologies, Inc
69.3 MB
Health & Fitness
Requires iOS 8.0 or later. Compatible with iPhone and iPod touch.
Age Rating
Rated 4+
© 2016 Lark Technologies, Inc
In-App Purchases
  1. Weight Loss Pro Subscription $19.99
  2. Weight Loss Pro Subscription $19.99
  3. Weight Loss Pro subscriptions $39.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

  • Siri

    Get things done within this app using just your voice.

More By This Developer

You May Also Like