Image of DietBet player Tayla smiling and laughingImage of DietBet player Tayla smiling and laughing
Nudge Nudge Win Win

What have Tayla and 800,000 others discovered?

How to play

How To Play - Three women sitting and encouraging each other

Choose a game

Find a game that fits your weight-loss goals, timing, and bet.

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Bet on yourself

Place your bet, weigh in with our Refs, and feel the motivation kick in.

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Lose the weight

Get help from the game’s host and other players as you stay focused.

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Cash out

Winners get back their bet plus a profit. It pays to bet on yourself!

Swipe to learn more →

Find a game

Partner hall of fame

Portrait of Lexi Reed

Lost 312lbs as a DietBet player, now a 26-time host with 182,234 players.

Lexi Reed

Portrait of Autumn Calabrese

Bestselling author and creator of 21 Day Fix, helped dietbetters lose over 300,000 pounds.

Autumn Calabrese

Portrait of Chris & Heidi Powell

Stars of ABC’s Extreme Weight Loss, hosted 17 dietbets with 99,640 players.

Chris & Heidi Powell

It's not dieting. It's not betting.

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DietBet is behavioral science in a game.

Loss aversion. Gamification. Accountability.

The best part: it works. Launched in 2013 as an experiment backed by research from Wharton and Brown Medical School, DietBet has helped over 800,000 people lose 10 million pounds and win over $60 million.

But it's more than just a game with money on the line. Ask a Dietbetter what makes this experience so powerfully effective, and the first thing they'll tell you is the community — how supportive it is, how helpful it is to make the journey with people who get you. It's a whole new approach to sustainable behavior change.

Read the science behind why DietBet works.

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It works!

13,000,000pounds lost
$83,551,762paid out to players
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“I won! I won weight loss, clothes fitting, confidence. I won better sleep, more energy, and a happier self! Oh, and a few extra dollars too!”

Janita S.
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Get the app

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love this game!!

⁠–⁠ Hannah Newar

Or send a link to your phone

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