GYMNASIUM
Strength training notebook
Only for iPhone
$4.99
iPhone
Your strength-training notebook, without an account. Build workouts, log sets and follow your progress, with timers and backups through Files.
GYMNASIUM is an iPhone workout notebook designed to help you organize your workouts and keep a clear record of your progress. Your workouts and history remain available offline, without creating an account.
TRAIN AT YOUR OWN PACE
Use Frantz’s personal preset, with three strength sessions and two stationary-bike sessions, or create your own workouts. Choose your exercises, their order, sets and repetitions. Estimated duration adapts to your choices and rest periods. Train on the day you choose; the original preset remains available.
KEEP A DETAILED TRAINING LOG
Record loads, repetitions, durations and notes. Add or remove sets, track each side for unilateral movements and review previous workouts. Switch between kilograms and pounds to suit your preferences.
TIMERS THAT KEEP YOU MOVING
Track your workout time and rest periods. Start a separate flat treadmill walk from the exercise list, pause or resume it, then finish and save.
MAKE PROGRESS YOUR OWN
Review your history and charts. Keep your next-workout references separate from your personal long-term goals. Body-weight tracking and goals are optional and can be hidden.
BACK UP THROUGH FILES
Export your notebook, import a backup or choose a folder for automatic copies while the app is open. Select a local folder or a provider available in Files, such as iCloud Drive. Cloud transfer depends on your chosen provider; this is not automatic syncing between devices. Exports are not encrypted by GYMNASIUM.
CHOOSE YOUR PREFERENCES
Use the app in French or English, with an option to prefer English exercise names. Notifications, gym-location reminders and Live Activities are optional.
GYMNASIUM contains no advertising or subscriptions. The programme and goals are training references, with no promised results or medical diagnosis.
Created by FRANTZ AGENIS II.
© AGENIS SYSTEMS · © AGENIS STUDIOS.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
GYMNASIUM 1.2
• Expanded catalogue: 62 illustrated exercise variants, including new barbell and cable-handle options.
• Optional repetition and duration targets for each exercise, with a live preview of their effect on estimated workout duration.
• Updated Frantz preset that you can choose to apply to your workouts.
• Optional shared entry for both sides of a movement or all four neck directions, with separate confirmation.
• Improved custom exercise management. Removing an exercise from a plan preserves its history.
• Improved notebook loading, input responsiveness and note saving.
Your notebook and previous workouts are preserved. The updated preset does not automatically replace your custom workouts.
The developer, FRANTZ JUNIOR AGENIS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- FRANTZ JUNIOR AGENIS
- Size
- 123.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English and French
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 FRANTZ JUNIOR AGENIS — AGENIS SYSTEMS · AGENIS STUDIOS

