What we make
The site offers a 3D animated coin toss, batch flippers that toss a coin 10, 100 or 1000 times with instant statistics, a session statistics dashboard, and a set of scenario pages — from who-goes-first rituals to the full history of the coin flip — each with its own working tool.
Every result is generated locally in your browser using the Web Crypto API's cryptographic random number generator. That means genuinely unpredictable 50/50 outcomes, no server round-trip, and nothing you flip ever leaves your device.
Why a coin flip site
The coin toss is the oldest and most trusted tiebreaker in human history — referees use it, legislatures use it, and friendships survive on it. But most online versions bury the coin under pop-ups and half the time their randomness is an afterthought.
We built CoinFlipSim to be the version we wanted to use: a beautiful coin, honest randomness, useful statistics, and a deliberately restrained ad experience. If you can flip a coin here faster than you can find a real one, we have done our job.
How it's funded
CoinFlipSim is funded by clearly-labeled display advertising. We keep ads away from the coin and buttons, mark every slot with an 'Advertisement' label, and never use interstitials or pop-ups. Your flip statistics are stored only in your own browser and are never sold, shared, or sent anywhere.