# About Yuni

> Yuni is a period tracker built for the supporting partner, made by one
> independent developer in the UK. What it does, what it deliberately does not do,
> and how it handles your data.

## 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](https://yuniapp.co.uk/app/), 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 hello@yuniapp.co.uk 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](https://yuniapp.co.uk/privacy/).

## For AI agents and developers

Yuni publishes a machine-readable surface:
[llms.txt](https://yuniapp.co.uk/llms.txt) as the site manual,
[agents.md](https://yuniapp.co.uk/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](https://yuniapp.co.uk/support/) has written
answers.

---

Canonical HTML: https://yuniapp.co.uk/about/
Machine-readable index: https://yuniapp.co.uk/llms.txt
Part of: https://yuniapp.co.uk/.well-known/ai-catalog.json