Tiny challenges.
Zero excuses.
Dare your friends, prove it daily, and keep the streak alive. Miss a window and everyone knows. That’s the point.
Hey, Alex
2 of 3 done
1 to go before midnight
🔥 12 day streak
Due now
Morning Run Club
Daily · Photo proof
Cold Shower Fortnight
Daily · Strict
Read 20 Pages
Daily · Journal
Yoga 3× a Week
3× a week
Lift Mon · Wed · Fri
M/W/F · Strict
No Added Sugar
Daily · 2 lives
10k Steps Daily
Daily · Photo proof
Daily Journal
Daily · Journal
Meditation Minutes
5× a week
Morning Run Club
Daily · Photo proof
Cold Shower Fortnight
Daily · Strict
Read 20 Pages
Daily · Journal
Yoga 3× a Week
3× a week
Lift Mon · Wed · Fri
M/W/F · Strict
No Added Sugar
Daily · 2 lives
10k Steps Daily
Daily · Photo proof
Daily Journal
Daily · Journal
Meditation Minutes
5× a week
0
ways to schedule: daily, weekdays, monthly, N× a week
0
kinds of proof: check-in, photo, journal
0 XP
for every completed window
0 XP
bonus for finishing a challenge
Features
Built to make quitting embarrassing
Streaks that actually sting
Every challenge window is a deadline. Hit it and the chain grows; miss it and you burn a life. Strict mode has no lives at all.
Proof or it didn't happen
Check in with a tap, a photo from the run, or a journal line. Valid proof inside the window is approved instantly.
Leaderboards with teeth
Live ranks from completed windows, misses and streaks. Watch your friends pass you in real time, or don't let them.
Any cadence
Every day, Mon/Wed/Fri, the 1st and 15th, or 3× a week on days you choose. Times are your local time; day numbers are shared, so friends in other timezones play the same days.
XP for showing up
25 XP per completed window, a fat bonus for finishing the whole challenge. Eliminated friends keep watching from below.
How it works
Three rules. No mercy.
01
Create or join
Pick the cadence, the proof and how forgiving it is: strict, or a few lives. Invite your group chat.
02
Check in before it closes
Each window has an opening and a hard deadline. One millisecond late is late. The server is the referee, not your phone clock.
03
Don't break the chain
Survive every window to finish. Run out of lives and you're eliminated, and the leaderboard remembers.
Proof
Pics or it didn’t happen
Photo challenges ask for real evidence. Valid proof inside the window is approved on the spot, and a missing check-in says plenty.
Morning Run Club
6:02 AM
APPROVEDCold Shower Fortnight
7:14 AM
APPROVEDRead 20 Pages
10:48 PM
APPROVEDLift Mon · Wed · Fri
No check-in
MISSEDYoga 3× a Week
6:55 PM
APPROVEDLeaderboards
Trash talk,
backed by data
Ranks come from completed windows, misses and streaks, resolved by the server, so nobody can argue with the result. Your group chat will never be the same.
- ✓Live podium for every challenge
- ✓Eliminations are public and permanent
- ✓XP totals follow you across challenges
Morning Run Club
Day 13 of 30 · 6 in
Sam · 325
Tom · 350
You · 300
Under the hood
One window, start to finish
Every challenge is a chain of windows. Here’s a daily 4–5 pm window doing its job, timed by our servers, so the deadline is the deadline on every phone.
Opens at 4:00 PM
The opening instant counts
Closes at 5:00 PM
4:59:59.999 counts. 5:00:00.000 doesn’t.
Completed
Valid proof inside the window. Approved instantly, +25 XP, streak grows.
Missed
The window closes without proof. That's one life gone and a reset streak.
Eliminated
One miss too many. Remaining windows are skipped, and the leaderboard remembers.
FAQ
Before you ask
Atomic Challenge is still in development and hasn't launched yet. Leave your email at the bottom of this page and we'll let you know when it's on the App Store and Google Play.
The Streak Report
From the blog
Get ready to start your streak
Coming soon to iPhone and Android. Get your group chat ready.