A private notes app for Android. Lives only on your phone — no cloud, no tracking, no sign-up.
Your notes never leave the device they were written on.
Notes are stored locally and encrypted with a key on your device. Nothing is sent to a server.
Keys live in the Android Keystore. AES-256 GCM with a session-based unlock — strong by default.
Unlock with fingerprint or face. Optional strict mode binds your data to biometrics in real time.
Back up your identity to a printable QR code. The only path back if you lose your device.
No sign-up, no analytics, no ads. The app does not request internet access at runtime.
Under 9 MB. No bloat. Designed to launch in under a second on a 3-year-old phone.
Notes are stored in the app's local sandbox, encrypted with a key sealed inside your phone's secure chip. They never reach a server, never touch the cloud, never pass through us.
Lose the phone and the notes go with it — but no one else reads a word. We have nothing to hand over, because we have nothing.
Unlock with the fingerprint or face you already use. Every read goes through biometrics — it's what stops a curious roommate or a lost phone from becoming a leak.
Worried about losing the phone too? Print your identity as a QR. It's the only door back, and only you hold the key.
v0.1 is the foundation. Here's the rest of the picture we're building toward.
PRIVATE NOTES — the foundation we just shipped. Your notebook, locked to your phone.
AUTHENTIC SHARING and TRUSTED CIRCLE — coming next. A way to share specific thoughts with specific people, with no one, not even us, in the middle.
Future versions add a personal biosphere — a private homepage made of insight shards, visible only to the people you trust.
Visitors won't scroll a feed. They'll see what you chose to grow.
When sharing arrives, it won't be a button. It'll be a translucent gummy with a keyhole at its core — you choose exactly which circle gets to bite in.
The note unlocks for them and only them. Tasteful sharing, no fear of judgment.
Scan with your phone
Download Guddle Keep for Android. Self-distributed, signed, and verifiable.
Open download page