Not a market. Not a list.
The only app where you make the predictions.
Any claim, in your own words. Put Coins behind it and find out who was right — against a friend or the whole world.
When being right feels just right.
Free to play · start with a stack of Coins · no card, no cash.
“Śląsk Wrocław will beat Trento by 10+ points, in their October 6, 2026 EuroCup game”
@eyal says TRUE
Unlike Polymarket & Kalshi
They list the markets. Here, you make it.
Polymarket and Kalshi decide what gets listed; you only trade on their questions. Here, you make the decision: ShakeOnIt is the only app where the prediction is yours to write — your team, your city's weather, your friend's diet. Pick your side, and one person takes the other. Head-to-head, even money, no order book.
How it works
Four moves, and you're in.
01 · PRIVATE
Predict against a friend
Make a prediction, pick a side, and send it to someone you know. Just you two.
“@sam won't last a week without takeout.”
02 · PUBLIC
Or take on the world
Post it public and someone, anywhere in the world takes the other side — one-on-one.
03 · WIN
Take the pot
You both stake the same. Get it right and the whole pot's yours — plus the bragging rights.
04 · CLIMB
Become the expert
Rise up the worldwide board for a subject you love — until you're the one to beat.
No cash. No catch.
All the thrill. No money.
- ✓It runs on Coins — play-money points, not real cash, with nothing to cash out.
- ✓You start with a free stack, and it grows just by playing.
- ✓The stakes are real — your Coins, your rating, your bragging rights. Just never your wallet.
A feed of real predictions
Jump in on whatever you know.
Sports, politics, crypto, weather — if people argue about it, you can Shake on it.
“Bitcoin tops $200k before 2030.”
🌍 Public · 12 in on this
“It'll rain in London this weekend.”
🌧️ Public · 🔥 Closing soon · 2:46:12
“No team goes unbeaten this season.”
⚽ Public · 30 in on this
Nobody else lets you write the prediction. Write yours.
Coins are free and you start with a stack. Nothing to lose but the argument.