Willpower, with a receipt.
Bad habits,
good outcomes.
GoodSlip helps you break a bad habit — smoking, takeaways, drinking, anything. Log every slip-up and it costs you £1. At the end of the week, your fines go straight to a charity you choose.
No password — we email you a sign-in link. No card required.
UK-based: fines in pounds, donations to UK charities.
Step 1
Log the slip
One tap when temptation wins.
Step 2
Pay the fine
£1 per slip, settled weekly.
Step 3
Charity wins
100% goes to a cause you pick.
How GoodSlip works
The full loop, from first slip to good deed — solo or against a friend.
Track your habit
Choose what you’re quitting and log a slip whenever temptation wins. One tap, no judgement — the honesty is the point.
Your fine builds through the week
Every slip costs £1. Watch the week’s total grow (or better, stay at £0). The week runs Monday to Sunday.
Settle up on Monday
When the week ends, your fine unlocks. You donate it to a charity you pick, through JustGiving — the money goes straight to the charity. GoodSlip never touches it.
Or challenge a friend
Send an invite link and go head-to-head. Fewest slips wins, and the loser’s fines go to charity. Losing has never felt so worthwhile.
Free to use · No card on file — you pay fines directly on JustGiving · Every fine goes directly to the charity