How can we help?

Yes. Sister Health is free to download and use during our current launch period. We'll communicate clearly before any future pricing changes.

Now. Sister Health is available to download on iOS and Android.

Sister Health requires iOS 15.1 or later on iPhone, or Android 7.0 or later on Android devices.

No. You can use Sister Health whether you have a diagnosis, are still looking for answers, or simply want to understand your cycle and symptoms better.

You can start by tracking what you notice. Over time, Sister Health can help surface patterns across what you log so you have a clearer picture of what's been happening.

Our current resources cover endometriosis, adenomyosis, PMOS (PCOS), PMDD, fibroids, perimenopause, irregular cycles and pain-related topics, alongside general cycle and symptom tracking.

Sister Health is built for bodies and cycles that don't always follow the rules. Alongside detailed symptom and cycle tracking, it can surface patterns from what you log, provides clear sourced health information, and lets you turn your tracking into a Doctor's Report for appointments.

Your data is stored securely on Amazon Web Services in London (eu-west-2), encrypted at rest and in transit. We never sell your data. For full detail, see our privacy policy.

Yes. You can delete your account from within the app, and full account and health-record deletion is implemented. Here's how to delete your account and data.

No. Sister Health does not provide medical advice, diagnosis or treatment. If you're concerned about symptoms, speak to a qualified healthcare professional. In an emergency, use the appropriate emergency service.

Community conversation is currently through the Sister Health Facebook group, which is linked from the app; it is not currently hosted inside the app.

No. What you log is yours — it's used to show you your own patterns and build your Doctor's Report, nothing else. We only improve the app from things you choose to send us, like feedback and survey answers.