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Unless you don’t do it.
Every check-in you prove comes back. Miss one, lose that one.
Live from the app
A commit, start to finish.
Name the habit and what counts.
Daily, a few times a week, or once.
Set what each check-in is worth.
Upload proof. A moderator checks it.
Collect every check-in you kept.
Example
3× a week · 4 weeks · $10 a check-in
Four findings from peer-reviewed trials.
81%
People who locked their savings away until they hit a goal saved 81% more in a year than people who didn’t.
QJE, 20062×
Trying to quit smoking, people who put down their own money did twice as well as people paid a reward.
NEJM, 201547%
A year on, people who’d staked their own money still kept up about half their extra gym visits. People only paid to go kept 16%.
AEJ: Applied, 20154×
Adding a chance to win made people four times more likely to sign up, and it worked just as well. One study, 137 students.
Psych. Sport Exerc., 2024Both put real money behind a habit. They settle very differently.
You against yourself
Private, and settled one check-in at a time.
You against a group
Everyone stakes the same. Finish and you split what the people who dropped out forfeited.
Seven finish, three drop out. The three forfeit $150. Accustom takes 12% — $18 — and the other $132 splits seven ways. Each finisher gets their $50 back plus about $18.85, less any grace days they spent.
A challenge picks one. On a commit, you do.