Tidewell is a health tracker built around one idea: your data should be private by default, not by request. Track cycles, symptoms, and medications — encrypted end to end, on your terms.
Log medications and doses alongside your cycle and symptoms, so patterns are easy to see in one place instead of scattered across apps.
Try Tidewell entirely on your device. Nothing is sent to a server until — and unless — you decide to create a synced profile.
Lose your device, not your history. Recovery is designed so no single leaked piece — server or database — is enough on its own.
Not a policy promise. A technical one.
Your entries are encrypted on your device before they ever reach our servers. We store ciphertext — not your history.
Encryption keys are derived from things only you control. Account recovery is split so that no single secret, on its own, unlocks your data.
Give a caregiver or partner access with a time-limited code. It expires on its own, or the moment you decide to end it.
Health tracking isn't always solo. Tidewell lets you bring a caregiver, partner, or parent into the parts of your care that need another set of hands — without handing over everything.
Share a specific window into your data with someone you choose, on a code that expires.
Add a phone or tablet later — each one gets its own secure key, without weakening the others.
Younger users get an experience scoped appropriately to their age, adjusting automatically over time.