Before the number

This is a toy. It runs on population averages and published risk research, so it is decent at showing you the difference between two choices and useless at telling you a date. It is not a medical opinion and it is not a prediction about you.

The range it works from is about fifteen years wide, which is the honest width. Anything narrower would be a guess in a suit.

Nothing you tap leaves your device. No account, no email, no tracking, nothing sent anywhere.

If a number in here lands harder than you expected, that is worth taking to a doctor or someone you trust rather than to a website.