SentryKey

Plans and prices

Every plan, in full

On the record

Android security

The Android vault is encrypted at rest with AES-256-GCM using a key held in Android Keystore.github.com · read 11 Oct 2026

Audit status

The maker describes SentryKey as a personal or hobby project that has not undergone a security audit.github.com · read 11 Oct 2026

Availability

The Android app is in closed Google Play beta and an APK is available from GitHub Releases.github.com · read 11 Oct 2026

Code type

totpgithub.com · read 22 Sep 2026

Encrypted backup

Yesgithub.com · read 22 Sep 2026

Encrypted backups

Encrypted backups use PBKDF2-HMAC-SHA256 with 210,000 iterations and AES-256-GCM, and the project says a lost backup passphrase cannot be recovered.github.com · read 11 Oct 2026

Integrations and imports

The project documents Garmin Connect IQ Bluetooth sync and QR imports from otpauth:// sources.github.com · read 11 Oct 2026

iOS security

The project says iOS secrets are stored in the Keychain.github.com · read 11 Oct 2026

Multi-device sync

Yesgithub.com · read 22 Sep 2026

Purpose

SentryKey is a TOTP authenticator for Garmin watches with Android and iOS companion apps.github.com · read 11 Oct 2026

Setup and sync

Accounts can be added by scanning otpauth:// QR codes on a phone and synced to the watch over Bluetooth.github.com · read 11 Oct 2026

Support

The maker directs users to file bug reports as GitHub issues and accepts optional donations through GitHub Sponsors and Ko-fi.github.com · read 11 Oct 2026

Supported platforms

Android,iOS,Garmin Connect IQgithub.com · read 22 Sep 2026

Supported watches

The app supports more than 100 round Garmin watches and excludes square or rectangular devices.github.com · read 11 Oct 2026

Sync security

Phone-to-watch sync can be encrypted with a configured passphrase; without one, the sync payload remains plaintext.github.com · read 11 Oct 2026

Watch codes

The Garmin watch generates RFC 6238 TOTP codes on-device, including when no phone is nearby.github.com · read 11 Oct 2026

Watch storage

On the watch, secrets are stored in plaintext because Connect IQ has no keystore.github.com · read 11 Oct 2026

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