Natasha Bot

Natasha Bot is a doorway to a mini app: the bot itself says little beyond the fact that it has an app for tracking your period and ovulation, and the actual work happens in a calendar that opens inside Telegram. You mark the days of your period, and the app turns that history into a forecast of the next cycle and of the days when you are most likely to be fertile.

The appeal is the format. A calendar is easier to read at a glance than a chat log, and because the app lives in Telegram you do not need to install a separate tracker or create an account with yet another service. For someone who simply wants to know roughly when the next period is due, that is enough.

Two things to weigh before you start. First, the forecast is arithmetic on the dates you enter: it gets better as you log more cycles and gets worse when your cycle is irregular, so treat fertile days as an estimate and never as a method of contraception. Second, cycle data is sensitive health information, and the bot names no developer, website or privacy policy, and does not publish its pricing. Log only what you are comfortable sharing with an unknown operator.