Description
Zanshin: The Privacy-First Tabata & HIIT Workout Timer
Train with focus. Own your data.
Zanshin is a professional-grade Tabata and HIIT workout timer designed for athletes who value both performance and privacy. Track your heart rate zones, calories, and training points—all while keeping your data 100% on your device.
KEY FEATURES
• Tabata & HIIT Timer
- Classic Tabata (20s work, 10s rest, 8 rounds)
- Customizable HIIT intervals
- Free-form open timer
- Create and save custom workouts
- Voice countdown announcements
- Visual and audio phase transitions
• Real-Time Heart Rate Tracking
- Connect Bluetooth heart rate monitors
- Monitor 5 heart rate zones in real-time
- Track average, max, and min heart rate
- Zone distribution analysis
- Training points system
• Performance Metrics
- Calorie burn estimation
- Heart rate zone points
- Workout duration tracking
- Energy level ratings
- Workout notes
• Privacy by Design
- 100% offline—no internet required
- All data stored locally on your device
- Export workout data to CSV
- Optional HealthKit integration
• Minimal Mode
- Distraction-free timer mode
- Hide metrics for maximum focus
- Perfect for pure Tabata sessions
- Toggle on/off anytime
• Workout History
- Complete workout history
- Heart rate graphs and zone analysis
- Export individual or all workouts
- Energy level tracking over time
• Health App Integration
- Optional HealthKit sync
- Workouts appear in Activity rings
- Full control over data sharing
PERFECT FOR
• Tabata enthusiasts
• HIIT training athletes
• Privacy-conscious fitness users
• Athletes who want detailed heart rate insights
• Anyone who values data sovereignty
PRIVACY FIRST
Your workout data, heart rate information, and personal metrics are stored exclusively on your device.
Your workouts. Your data. Your control.
TECHNICAL REQUIREMENTS
• iOS 18.6 or later
• Bluetooth heart rate monitor (for full features)
• Optional: HealthKit for workout sync
DISCLAIMER
Zanshin is a fitness tracking tool for informational purposes only. It is not a medical device and should not be used to diagnose or treat any health condition. Always consult with a healthcare professional before starting a new high-intensity training program.
Built for the focused. Handcrafted by https://nashubyte.com/