Coin Flip
Settle it the ancient way. One tap flips a cryptographically random coin — and the penguin keeps score, so there's no arguing about best-of-three afterward.
How to use
- Hit “Flip the coin.” The coin spins and lands on heads or tails.
- Watch the scoreboard. Heads and tails counts plus your current streak update after every flip.
- Settle the debate. Assign each option to a side, flip once, and honor the result — the penguin has spoken.
- Keep flipping. Every flip is independent and cryptographically random, streaks included.
Frequently asked questions
Is this coin flip really random?
Yes. Each flip uses your browser's cryptographic random number generator (crypto.getRandomValues) — the same source operating systems use for encryption keys, not the weaker Math.random() most toy flippers use. Every flip is independent: the coin has no memory of the last one.
Can I flip a coin online to make a decision?
That's exactly what this is for — who goes first, heads-or-tails tiebreakers, picking between two options. Assign each option to heads or tails, flip once, and honor the result. The streak counter keeps best-of series honest.
What are the odds of flipping heads five times in a row?
About 1 in 32, or 3.1% — (1/2)^5. Streaks feel impossible but they're completely normal: across 100 flips you'd actually expect to see a run of five or six somewhere. If the streak counter climbs, that's probability showing off, not a rigged coin.
Does the coin flip work offline?
Once the page has loaded, yes — everything runs in your browser with no server involved, so airplane mode won't stop the flipping.
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