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Be part of a weight loss and wellbeing study

  • Lose your unwanted weight
  • Understand nutrition better
  • 12 months FREE Lifesum Premium

We know Lifesummers lose weight and we’re interested in understanding how people feel and what they eat during their weight loss journey.

Lifesum is looking for active participants for a 12-week Weight loss and Nutrition study. Eligible participants receive a free 12-month Lifesum Premium membership as well as a 15% Thrive Market discount coupon.

It’s as simple as this: answer 6 eligibility questions, get your unique code, download the Lifesum app and you’re away!

Join the Lifesum study today!

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Based on 234,617 customer reviews.

Last updated: 2019-01-15. To leave a review, visit App Store or Google Play.

Easy to use, love the interface and how it has recipes and keeps me on plan. I upgraded to the full version, no regrets! I’ve tried many apps and in my opinion this one is the simplest to use and guides my choices!

I have tried many different calorie counting apps and have never been able to stick to them. However, I have been using lifesum for a while now and am absolutely loving it!! I even bought the premium version! I also have an Apple Watch and love the little green apple that motivates me to move & and drink my water! <3

Seriously, I’ve tried it all. Get this! It’s super easy, and if you want personalized help it’s CHEAP and WORTH EVERY PENNY. I’m a happier, healthier gal.