Duper
Lost your phone? Send it "duper".
新版本 2.1.2
Major security and privacy update.
- Ring and Locate now disabled by default
- Locate requires a dedicated secret; Ring can use its own optional password
- Commands only run while the phone is locked
- Toggle flash, sound, vibration; optional SMS confirmation for Ring
- Location SMS includes an OpenStreetMap link; long SMS sent as multipart
- Notifications for accepted/refused commands; Android backup disabled
- Reliability and GrapheneOS compatibility fixes
- Ring and Locate now disabled by default
- Locate requires a dedicated secret; Ring can use its own optional password
- Commands only run while the phone is locked
- Toggle flash, sound, vibration; optional SMS confirmation for Ring
- Location SMS includes an OpenStreetMap link; long SMS sent as multipart
- Notifications for accepted/refused commands; Android backup disabled
- Reliability and GrapheneOS compatibility fixes
Lost your phone? Send it "duper".
Why "Duper"? It's French verlan (backwards slang) for "perdu" — meaning "lost". Reverse the syllables: du-per. The app that finds what's lost, named after being lost.
Duper lets you remotely control your Android phone using SMS commands. It has no account, server, tracking SDK, or internet permission. Secrets, settings, command history, and location data stay on the device and are excluded from Android backups and device transfers.
Send "duper ring" to make your phone ring with the flashlight blinking. Useful when you've lost your phone nearby. Device and Do Not Disturb policies may limit alerts.
Send "duper locate" to receive GPS coordinates by SMS at regular intervals. Useful in an emergency or when you lend your phone to someone.
Features:
• Ring with flash, bypasses silent mode
• GPS location tracking via SMS
• Both modes stop when the phone is unlocked
• Configurable command prefix, optional Ring password, Locate secret, duration, and interval
• Custom ringtone support
• Works entirely offline over SMS
• No account, no cloud, no tracking
The Camera permission is used only to control the device torch during a ring alert. Duper does not capture photos or video. The Vibration permission is used only for ring alerts.
Location uses location permissions, including background location when the app is closed. The optional ADB-only WRITE_SECURE_SETTINGS permission lets Duper attempt to enable Android location services when they are off; it is not needed when location services are already enabled.
Ring and Locate are disabled by default. Ring can use an optional password and optional SMS confirmation; Locate requires its own secret and sends SMS responses. The app requests only the permissions needed when you enable each mode.
For privacy, remote commands run only while the phone is locked and stop when it is unlocked.
Note: On Android 13+, you may need to allow restricted settings once in the app settings before granting permissions.
Open source under GPL-3.0.
Why "Duper"? It's French verlan (backwards slang) for "perdu" — meaning "lost". Reverse the syllables: du-per. The app that finds what's lost, named after being lost.
Duper lets you remotely control your Android phone using SMS commands. It has no account, server, tracking SDK, or internet permission. Secrets, settings, command history, and location data stay on the device and are excluded from Android backups and device transfers.
Send "duper ring" to make your phone ring with the flashlight blinking. Useful when you've lost your phone nearby. Device and Do Not Disturb policies may limit alerts.
Send "duper locate" to receive GPS coordinates by SMS at regular intervals. Useful in an emergency or when you lend your phone to someone.
Features:
• Ring with flash, bypasses silent mode
• GPS location tracking via SMS
• Both modes stop when the phone is unlocked
• Configurable command prefix, optional Ring password, Locate secret, duration, and interval
• Custom ringtone support
• Works entirely offline over SMS
• No account, no cloud, no tracking
The Camera permission is used only to control the device torch during a ring alert. Duper does not capture photos or video. The Vibration permission is used only for ring alerts.
Location uses location permissions, including background location when the app is closed. The optional ADB-only WRITE_SECURE_SETTINGS permission lets Duper attempt to enable Android location services when they are off; it is not needed when location services are already enabled.
Ring and Locate are disabled by default. Ring can use an optional password and optional SMS confirmation; Locate requires its own secret and sends SMS responses. The app requests only the permissions needed when you enable each mode.
For privacy, remote commands run only while the phone is locked and stop when it is unlocked.
Note: On Android 13+, you may need to allow restricted settings once in the app settings before granting permissions.
Open source under GPL-3.0.
版本
尽管下面提供了 APK 安装包的下载选项，但你应该注意，以这种方式安装将不会收到更新通知，这是一种不太安全的下载方式。 我们建议你安装使用 F-Droid 客户端。
下载 F-Droid-
arm64-v8aarmeabi-v7ax86x86_64该版本需要 Android 7.0 及以上版本。
此包由原始开发者构建并签名，并保证对应于此源代码 tarball。
-
arm64-v8aarmeabi-v7ax86x86_64该版本需要 Android 7.0 及以上版本。
此包由原始开发者构建并签名，并保证对应于此源代码 tarball。
-
arm64-v8aarmeabi-v7ax86x86_64该版本需要 Android 7.0 及以上版本。
此包由原始开发者构建并签名，并保证对应于此源代码 tarball。
新版本 1.1.5
Initial public release.