1. 01Choose or create a set and enter at least two non-empty options.
2. 02Click “Spin” and wait for the animation, about 4.2 seconds.
3. 03Read the result; the last 10 results live only in the current page state, while the sets themselves are written to localStorage.

With six valid options the random index ranges from 0 to 5; blank lines are filtered out first, so an empty option can never be drawn.

• At least two valid options are required.
• There are no weights: every valid option has the same probability of being indexed.
• Sets are persisted in the browser locally; the recent results are not guaranteed to survive a refresh.
• A random result suits entertainment and low-stakes decisions and should not replace a professional or high-consequence decision process.

Option sets are stored only in the current browser's localStorage; nothing is uploaded.