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Join a challenge
Choose the duration, daily limit, and entry fee before you start.
iPhone screen time challenges
21 Less
Spend less total time on your iPhone. Join a 21-day screen time challenge and qualify for a share of the reward pool.
One entry fee. One daily limit. No surprise missed-goal charges.
How it works
Set the limit. Keep the day.
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Check your progress
See time left today and your running challenge status.
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Finish the run
Complete every required day to qualify for the reward pool.
Why it works
A little pressure makes the habit real.
Screen time goals are easy to ignore when nothing changes. 21 Less turns the goal into a daily challenge you can actually feel.
Real accountability
An entry fee makes the commitment harder to shrug off.
Visible progress
Watch your remaining time, app usage, and challenge streak.
Reward pool
Finishers qualify for a share of the challenge pool.
No surprise charges
Missing a goal just means you do not qualify for that pool.
Built for iPhone
Made for the daily limit you can actually track.
1h limit
21 days
Auto checks
Screen Time-based checks
Progress is verified with Apple Screen Time and Device Activity signals.
Challenge discovery
Find challenges with clear limits, durations, and reward pools.
Wallet and results
Track entry fees, reward credits, and challenge history in one place.
Private usage details
Other users do not see your individual app usage or daily totals.
Less screen. More life.
Start with one daily limit and a 21-day challenge.