KeyNest
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About this app
KeyNest is an offline-first Android password and passkey manager. Your credentials
are stored only on your device and are never transmitted to any external server.
No account, no cloud sync.
What KeyNest does
- Acts as an Android Autofill service, surfacing matching credentials on login screens
- Works with inline suggestions on GBoard and other IMEs
- Unlocks via biometric (fingerprint / face) or device credential when an autofill
candidate is selected
- Acts as a Passkey provider on Android 14 and later (selectable from "Passwords,
passkeys & autofill" settings)
- Encrypts secrets with AES-GCM, with keys backed by the Android Keystore
(TEE / StrongBox where available)
- Supports custom fields for business apps that ask for member number, staff ID,
branch code, or other non-standard inputs
- Reuses fields detected during prior autofill sessions when you register new
credentials
- Material 3 with automatic light / dark theme switching
What KeyNest does NOT do
- No cloud sync
- No multi-device sharing
- No external data transmission, including backup uploads
- No account registration, no sign-up
If you need the same data on multiple devices, please wait for an upcoming export
feature.
Privacy by design
KeyNest does not send your credentials to the developer, Google, or any third party.
The INTERNET permission is intentionally not declared in AndroidManifest, so any
network attempt anywhere in the app fails fast at the OS level with a
SecurityException.
Who it's for
- People who want their passwords to stay on the device
- Anyone storing business app logins alongside member numbers / staff IDs
- Privacy-conscious users uncomfortable with cloud password managers
- Anyone looking for a lightweight passkey provider on Android 14+
Requirements
- Android 8.0 (API 26) and later
- Passkey features require Android 14 (API 34) or later
Open source
KeyNest is MIT licensed. Source code and the vulnerability disclosure channel are
available on GitHub.
https://github.com/hitoshiichikawa/KeyNest
Privacy policy
https://hitoshiichikawa.github.io/KeyNest/privacy-policy
Terms of service
https://hitoshiichikawa.github.io/KeyNest/terms
Support
https://hitoshiichikawa.github.io/KeyNest/support
are stored only on your device and are never transmitted to any external server.
No account, no cloud sync.
What KeyNest does
- Acts as an Android Autofill service, surfacing matching credentials on login screens
- Works with inline suggestions on GBoard and other IMEs
- Unlocks via biometric (fingerprint / face) or device credential when an autofill
candidate is selected
- Acts as a Passkey provider on Android 14 and later (selectable from "Passwords,
passkeys & autofill" settings)
- Encrypts secrets with AES-GCM, with keys backed by the Android Keystore
(TEE / StrongBox where available)
- Supports custom fields for business apps that ask for member number, staff ID,
branch code, or other non-standard inputs
- Reuses fields detected during prior autofill sessions when you register new
credentials
- Material 3 with automatic light / dark theme switching
What KeyNest does NOT do
- No cloud sync
- No multi-device sharing
- No external data transmission, including backup uploads
- No account registration, no sign-up
If you need the same data on multiple devices, please wait for an upcoming export
feature.
Privacy by design
KeyNest does not send your credentials to the developer, Google, or any third party.
The INTERNET permission is intentionally not declared in AndroidManifest, so any
network attempt anywhere in the app fails fast at the OS level with a
SecurityException.
Who it's for
- People who want their passwords to stay on the device
- Anyone storing business app logins alongside member numbers / staff IDs
- Privacy-conscious users uncomfortable with cloud password managers
- Anyone looking for a lightweight passkey provider on Android 14+
Requirements
- Android 8.0 (API 26) and later
- Passkey features require Android 14 (API 34) or later
Open source
KeyNest is MIT licensed. Source code and the vulnerability disclosure channel are
available on GitHub.
https://github.com/hitoshiichikawa/KeyNest
Privacy policy
https://hitoshiichikawa.github.io/KeyNest/privacy-policy
Terms of service
https://hitoshiichikawa.github.io/KeyNest/terms
Support
https://hitoshiichikawa.github.io/KeyNest/support
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Personal info
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
What’s new
KeyNest 1.1.0 brings full Passkey support:
- Register and use passkeys on any site or app via Android Credential Manager
- Manage stored passkeys (rename / delete) in the new Passkeys screen
- Settings now shows provider status with a one-tap link to system settings
Other improvements:
- AutoFill suggestion rows now show the target app's icon
- Register and use passkeys on any site or app via Android Credential Manager
- Manage stored passkeys (rename / delete) in the new Passkeys screen
- Settings now shows provider status with a one-tap link to system settings
Other improvements:
- AutoFill suggestion rows now show the target app's icon
Everyone
Learn moreApp support
About the developer
市川 仁
hitoshi.ichikawa@gmail.com
Japan