Exercise Timer Resero
EMOM & Custom Workout Timer
Free · Designed for iPhone. Not verified for macOS.
The only Exercise Timer you need.
Resero is a premium interval timer built for athletes, coaches, and anyone serious about their fitness.
RE-SE-RO stands for REps, SEts, and ROunds. Whether you want to build complex custom workouts from scratch or jump straight into pre-built routines, Resero adapts to your exact training style.
What Makes Resero Different
NEW! Premade Workout Library:
Skip the setup and dive straight into training. Pick from professionally structured routines across Tabata, EMOM, HIIT, and combat sports or customize any library workout to fit your exact goals.
NEW! Apple Watch Companion App:
Complete wrist control. Start, stop, and skip intervals hands-free without touching your phone. Monitor real-time heart rate and active calories while contributing directly to your Apple Activity Rings and Apple Fitness details.
Fully Customizable:
Stop trying to force your routine into a rigid, basic timer app. Build your workout from scratch and customize every single interval, rep, set, and rest period exactly how you train.
Smart Audio Cues:
Never miss a transition or drown out your music. Resero automatically dims your audio background during cues, then seamlessly restores the volume.
Fully Customizable:
Build every interval, rep, set, and rest period with total precision.
Runs in the Background:
Change your music track or answer a text without interrupting your timer or audio cues.
100% Ad-Free:
Zero video pop-ups, zero banner clutter, and zero mid-circuit interruptions.
Automatic History Log:
Completed sessions are saved automatically to your in-app calendar and synced with Apple Fitness to track your long-term consistency.
Clean, High-Visibility Interface:
Modern, ergonomic design featuring massive buttons built for effortless tapping while mid-workout and dripping with sweat.
Built for Every Discipline:
- HIIT & Tabata: Fine-tune high-intensity work-to-rest ratios.
- Boxing & MMA: Set custom round lengths, rest periods, and warning bells.
- Weightlifting & Calisthenics: Track precise lift sets and recover with exact rest countdowns.
- EMOM & Circuit Training: Streamlined for solo gym sessions or leading full group fitness classes.
How it works:
1) Choose or Build: Grab a ready-to-go routine from the workout library or build your own from scratch.
2) Train & Sync: Go hands-free on your iPhone or Apple Watch while tracking heart rate and calorie burns.
3) Track: Review your calendar history, close your activity rings, and build lasting consistency.
Ditch the outdated timers. Download Resero today and give your workout the precision it deserves.
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Terms of Service: https://www.reseroapp.com/en/terms-of-service/
Privacy Policy: https://www.reseroapp.com/en/privacy-policy/
Legal Notice: https://www.reseroapp.com/en/legal-notice/
Thanks for using Resero! This version includes the following new features:
• Resero Apple Watch App: Your complete training partner — now on your wrist. Track your intervals, repetition sets and rounds without touching your phone.
• Measurement Units: Adjust your measurement units for Apple Watch App under Settings > Measurement Units.
• What's New Section: See how far we've come — explore all version updates under Settings > What's New.
The developer, Imarum GmbH, 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 Linked to You
The following data may be collected and linked to your identity:
- User Content
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Imarum GmbH
- Size
- 117.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Imarum GmbH