Flip a virtual coin to settle a decision, or run a large batch — up to 100,000 flips at once — to watch the law of large numbers in action. The running tally shows how many heads and tails have come up across every flip in this session, along with the current percentage split, and you can reset the counters at any time to start a fresh experiment.
Each flip uses crypto.getRandomValues, the browser's cryptographically secure random source, with rejection sampling to guarantee an exact 50/50 chance and no hidden bias. Everything runs locally in your browser and nothing is sent to a server, so this works offline and is great for making choices, teaching probability, or seeding simple games.