New in version 0.6.0
Food analysis is more honest about what it does not know. An estimate now breaks the meal into its components, and when something is genuinely uncertain the app says which thing it is — the portion, the cooking method, hidden oil or sauce — and asks for that detail instead of guessing. A single analysis is now one request rather than a silent chain of up to three, and a stronger model is used only when you tap for it. Live fasting and workout notifications also keep counting correctly when the p
Solo Forge is a free and open source Android fitness app: an intermittent fasting timer, calorie and macro counter, weight tracker, and workout timer in one. No ads, no tracking, fully offline.
It is built around local data ownership:
* No backend
* No accounts
* No analytics
* No crash reporting
* Android cloud backup disabled
* Full backup and restore to a single file, with optional auto-backup to a folder you choose
Features:
* Intermittent fasting timer with 16:8, 18:6, 20:4, and 36 hour modes
* State-driven fasting reminders instead of daily notification spam
* Food photo analysis using your own OpenRouter API key
* Manual meal entry and editable macro estimates
* Local calorie and macro goals
* Weight history with charting
* Simple, interval, and exercise/rest workout timers
* Dashboard for fasting, nutrition, weight, workout time, and streaks
* Daily journal notes on the progress calendar
* Optional Health Connect sync for weight and workouts, so entries recorded by a scale or tracker do not need retyping
Solo Forge sends a network request only when you start food photo analysis. That request goes to OpenRouter using the API key you provide. All saved meals, weight entries, workouts, fasting history, settings, and exports remain local to your device.
Solo Forge is licensed under GPL-3.0.
Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid
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arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 8.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
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take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
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have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
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control vibration
Allows the app to control the vibrator.
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prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
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android.permission.health.READ_EXERCISE
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android.permission.health.READ_WEIGHT
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android.permission.health.WRITE_EXERCISE
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android.permission.health.WRITE_WEIGHT
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com.kbul.spicycrab.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
3 MiB
PGP Signature
|
Build Log
New in version 0.5.0
Active workouts now recover after the app process is stopped, reminders and live notifications are more reliable, and backup, food, fasting, and Health Connect edge cases have been hardened. This release also upgrades the Android build toolchain for continued platform compatibility.
-
arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 8.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
control vibration
Allows the app to control the vibrator.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
android.permission.health.READ_EXERCISE
-
android.permission.health.READ_WEIGHT
-
android.permission.health.WRITE_EXERCISE
-
android.permission.health.WRITE_WEIGHT
-
com.kbul.spicycrab.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
3 MiB
PGP Signature
|
Build Log
New in version 0.4.2
Photo analysis now uses far less memory: pictures are scaled down as they are read rather than after, which should stop the food camera running out of memory on phones with big sensors. The first-run intro screen no longer sits under the status bar or the gesture handle. The analyzed photo itself is unchanged.
-
arm64-v8a
armeabi-v7a
x86
x86_64
This version requires Android 8.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
run foreground service
Allows the app to make use of foreground services.
-
run foreground service with the type "specialUse"
Allows the app to make use of foreground services with the type "specialUse"
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
show notifications
Allows the app to show notifications
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
control vibration
Allows the app to control the vibrator.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
android.permission.health.READ_EXERCISE
-
android.permission.health.READ_WEIGHT
-
android.permission.health.WRITE_EXERCISE
-
android.permission.health.WRITE_WEIGHT
-
com.kbul.spicycrab.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
3.0 MiB
PGP Signature
|
Build Log
