How it works
No account. No cloud. Just your phone.
Most tracking apps send your most personal data to a server the moment you open them. Mahina is built the opposite way: your data is created, kept, and controlled on your device — and nowhere else.
1 · Open & go
No sign-up, no email, no phone number. You pick period or pregnancy tracking and you're in. Your region is confirmed once so the right privacy rules apply — that's it.
2 · Log what you want
Tap a day to log a period or symptoms, follow your pregnancy week, jot a private note. It's saved straight to the encrypted database on your phone.
3 · You decide what leaves
Nothing leaves your device unless you act: export a doctor PDF, create a share card, or make an encrypted backup. You choose the contents and where it goes.
The data lifecycle
- Created on device. Everything you enter is written to a local database encrypted with a key held in your phone's secure keystore.
- Kept on device. The app makes no network calls in this version, so your data has no path off the phone on its own.
- Shared only by you. A PDF, share card, or backup is produced on demand and handed to your phone's own share sheet or saved to a file you control.
- Deleted for real. "Delete everything" wipes the key and the data. With no server copy, there is nothing left to recover — which is exactly what makes the deletion meaningful.
What about losing my phone?
Because your data is only on your device, a lost phone means the data is gone with it (and unreadable to anyone without your unlock and app lock). That's the trade-off of true privacy — so Mahina gives you an encrypted backup you can make anytime and restore on a new phone. The backup is protected by a passphrase only you know; we can't read it and don't hold a copy.
How can it be free with no ads?
The core app is free and stays free. A future, optional "Supporter" tier and other choices will fund it — never by selling your data, which the architecture makes impossible. Ads, if they ever appear, are a later phase, never in the EU, and never for teens.