Contact

Questions, bug reports, and suggestions are all welcome.

Reporting a problem with the coin

To help us reproduce and fix something quickly, please include:

What you did — a plain toss, a call before the flip, or a call in the air
What the coin showed, and what the result text and tally said
What you expected instead
Your browser and device, and whether you have reduced motion enabled

"It came up heads six times in a row" is worth reading the note on streaks before reporting — long runs are what a fair coin does, and the tally tracks your longest run precisely so you can see them arrive at about the expected rate. If something genuinely looks wrong, though, say so: confirmed issues are fixed in the engine and locked in with a new automated test so they cannot come back silently.

What we cannot help with

TossThatCoin cannot settle what your coin toss meant, referee a dispute about a toss that already happened, or serve as a certified or auditable randomness source. It produces no record anyone else can verify after the fact — nothing is stored outside your own browser.