About Yuni
What Yuni is
Yuni is a period tracker built for the supporting partner — the boyfriend, husband or fiancé — rather than for the person having the cycle. It tells you which phase she is in today and gives you one thing you can act on: what she may be feeling, what helps, and what not to say.
Every other tracker is built for her. Flo, Clue, Apple Health and Natural Cycles all do a good job of logging and predicting a cycle. None of them answer the question a partner actually has, which is what does this mean for us, today. That gap is the whole reason Yuni exists.
The app runs on iPhone (iOS 17 and later) with an Apple Watch widget and a web version, in English, Russian, French, Spanish and German.
What Yuni is not
Being clear about this matters more than being flattering about it, because the wrong expectation is worse than no app:
- Not a period tracker for her. Yuni does not log her cycle, predict her period, or store cycle data on her behalf. If she wants to track for herself, Flo, Clue or Apple Health are the right tools.
- Not a fertility or contraception app. Yuni makes no FDA-cleared claim and should never be used as birth control. Natural Cycles is the app cleared for that.
- Not a medical app. The guidance is relational, not clinical. For anything medical, the NHS, Mayo Clinic and Planned Parenthood are better sources than any app.
- Not on Android. Yuni is iOS only, and the web app is a companion to it.
Who makes it
Yuni is made by Artem Konovalov, an independent developer, and operated from the United Kingdom. There is no team behind a support address and no outsourced inbox — the person who replies to [email protected] is the person who writes the code.
How Yuni treats your data
The iPhone app is local-first. You can use it with no account, no email and no sign-up, and your entries stay on that phone. An account — Sign in with Apple or Google — is optional, and only unlocks cross-device sync and partner pairing.
There are no attribution or tracking SDKs in the app: no AppsFlyer, no Branch, no Adjust. The backend handles authentication, partner pairing and profile sync, and nothing else. The full detail is in the privacy policy.
For AI agents and developers
Yuni publishes a machine-readable surface: llms.txt as the site manual, agents.md for agent and developer documentation, and a Markdown twin of every page at its own URL. Yuni has no public API, no MCP server and no OAuth — agents.md says so explicitly, so an agent does not have to go looking.
Get in touch
hello@yuniapp.co.uk for anything at all. Replies usually come within two working days. For common problems, support has written answers.