Private Cycle Tracking

Your health data
belongs to you.

Alivenia tracks your cycle and symptoms entirely on your device — encrypted with AES-256, no account required, no data ever leaving your phone.

No account No cloud No ads AES-256 encrypted iOS & Android
Features

Everything you need.
Nothing you don't.

Fully featured cycle tracking that takes seconds to use — and keeps every data point private.

Cycle prediction

Learns your pattern over time and estimates your next period, fertile window, and ovulation date — getting more accurate with every logged cycle.

Symptom logging

Log energy, mood, pain, sleep, and physical symptoms in under 3 seconds. Tap once — you're done. No typing required, ever.

Health insights

Visualize patterns across cycles — symptom frequency, mood correlations, energy trends, and cycle length variation — surfaced automatically over time.

Doctor's report

Export a formatted PDF summary of your cycle history and symptoms — formatted for a clinical conversation, entirely generated on your device.

Encrypted backup

Back up your data to a passphrase-protected file you keep. Restore it on a new device. Your key, your file — we never touch it.

Smart reminders

Optional local notifications for period predictions, fertile windows, and logging reminders. Scheduled entirely on your device — no server involved.

Privacy promise

We don't know anything about you.

That is not a marketing line — it is a technical fact. Here is how it works.

No account, ever

We have no sign-up flow because we have no user database. Nothing to breach, nothing to subpoena, nothing to lose.

AES-256 on-device encryption

Your database is encrypted with a key derived from a secret stored in your device's secure enclave. Unreadable to us or anyone else.

No analytics or tracking

No crash reporters, no usage analytics, no third-party SDKs phoning home. The app works fully offline and makes zero network requests.

Location & name blind

We do not ask for your name, location, age, or any identifying detail. The app genuinely does not need to know who you are.

Technical security

Built on
proven cryptography.

  • SQLite with SQLCipher (sqlite3mc) — the database file on disk is encrypted. Opening it without the correct key returns nothing.
  • flutter_secure_storage — the database key is stored in the iOS Keychain or Android Keystore, protected by the device's hardware security module.
  • AES-256-GCM backup encryption — backup files are authenticated ciphertext. A wrong passphrase or any tampering is detected before a byte of data is decrypted.
  • Argon2id key derivation — backup passphrases are stretched using Argon2id (memory-hard), making brute-force attacks computationally infeasible.
  • No network permissions — the app requests no internet permission. It cannot exfiltrate data even if compromised.

Encrypted backup & restore

Your backup is an encrypted binary file that only your passphrase can open. We never see it, store it, or touch it.

  1. Choose a strong passphrase in Settings
  2. Alivenia encrypts your data with AES-256-GCM using an Argon2id-derived key
  3. Save the file wherever you like — your phone, a USB drive, your computer
  4. On a new device, open Settings → Restore backup, enter your passphrase
  5. Your data is decrypted and restored — completely offline
Coming soon

Private tracking,
finally done right.

Alivenia is in development. Add your email to hear when it launches — or just check back.

Download on theApp Store Get it onGoogle Play
Privacy Policy

Short, plain, honest.

We wrote this ourselves, in plain language. It is short because there is not much to say.

Read the full privacy policy

Last updated: September 2026

Alivenia is a local-only app. All data you enter is stored on your device using an AES-256 encrypted SQLite database. We do not collect, transmit, store, or have access to any information you enter into the app.

What we collect: Nothing. We do not collect your name, email address, location, device identifiers, usage data, or any other information.

Analytics and crash reporting: None. The app contains no analytics SDK, no crash reporter, and no third-party code that makes network requests.

Backups: If you use the backup feature, the backup file is encrypted on your device before you save it. We never receive or handle your backup file. You control where it goes.

Notifications: If you enable reminders, they are scheduled locally on your device. We do not use push notification services.

Network access: The app does not request internet permission. It is incapable of transmitting data over the network.

Children: The app does not collect data from anyone, including users under 13.

Changes: If this policy ever changes in a meaningful way, the change will be noted in the app update release notes.

Contact: Questions about this policy can be submitted via the support page.