The Flutter app wger supports fitness and workout tracking through its mobile interface.
Open source
24 alternativesFlexify
With progress graphs, rest timers and custom themes, Flexify tracks strength and cardio workouts offline.
About Flexify
Flexify is an open source workout tracker for logging strength and cardio training. The homepage describes it as an offline-first app that works without an internet connection. Users can build workout plans, log weights, reps, cardio, and rest periods, and review exercise history and progress graphs.
The homepage says data is kept on the device. It does not mention cloud backup or any external services. The app is listed for Android, iOS, Linux, macOS, and Windows. The homepage describes the theme options as light or dark, and the source does not list other theme options.
Key features
- Build workout plans around chosen exercises and schedules
- Log weights, reps, cardio, and rest periods during training
- View exercise history and progress graphs
- Configurable features and light or dark themes
- Works without an internet connection
- Keeps workout data on the user's device
Best for: People who want a workout log that works without an internet connection and keeps their data on their own device.
Good for
- Works without an internet connection
- Open source and available under the MIT License
- Stores data on the device, according to the homepage
Watch out for
- The homepage describes theme options as light or dark only
- Building from source requires the Flutter toolchain
Flexify at a glance
- Category
- Health & Fitness › Health & Fitness Resources
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Android, iOS, Linux, macOS, Windows
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Flexify alternatives
Tools and sites you could use instead, ranked by how closely they match.
FastNFitness tracks body, cardio and fitness activity through its Android app.
Open source
24 alternatives
The trale app keeps a body-weight diary with progress tracking, customizable themes and unit choices.
Open source
24 alternatives
RunnerUp tracks sports activities with GPS and displays pace, distance and time, with configurable audio cues and interval workouts.
Open source
24 alternatives
wger manages workout routines, diet plans, body weight and measurements, with a food database and exercise wiki.
Open source
24 alternatives
Koduko tracks habits in a Flutter app, according to its GitHub project description.
Open source
24 alternativesPopular in Health & Fitness Resources
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Flexify FAQ
Where is workout data stored?
The homepage says data is kept on the device. It does not mention cloud backup or external services.
How can I build Flexify from source?
The homepage lists the commands flutter pub get and flutter run. It states that the project is built with Flutter and that contributions are welcome, as described in CONTRIBUTING.md.
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