Echo: One Workout
Merge your Strava activities
Only for iPhone
Free
iPhone
Echo creates one complete Strava activity from your equipment data and watch heart rate. It also puts split activities back together — when your watch died mid-run, you accidentally stopped, or you paused too long between sets.
When you do a spinning or rowing class, your gym equipment records power, cadence, and speed — while your watch records heart rate. Both end up on Strava as separate, incomplete activities. Your equipment shows fake heart rate data. Your watch is missing power and cadence. Echo fixes this in one tap.
And when a single workout ends up as two or three separate activities — because of a gap, a restart, or a device switch — Echo finds the pieces and puts them back together.
HOW IT WORKS
1. Work out as normal — gym equipment, watch, or both
2. Open Echo — it finds matching activities and shows what data comes from where
3. Tap to upload — one complete activity on Strava, originals hidden from your feed
Your Strava activity now shows real heart rate alongside power, cadence, and speed. Strava computes Relative Effort and Training Load from the actual data.
WORKS WITH
Gym equipment:
• Spinning bikes via Spivi, Technogym, Peloton
• Rowing machines via ErgData / Concept2
• Any equipment that syncs via a vendor app
Running and outdoor:
• Runna, Garmin, COROS, Polar
• Any app that records to Strava or Apple Health
Heart rate from your watch via Apple Health.
PRIVACY
All processing happens on your iPhone. Echo sends anonymous usage statistics to help improve the app — no names, no activity data, no health data. No third-party analytics. No ads.
Full privacy policy: echo.stephankurz.com/privacy
DETAILS
• Power, cadence, speed, distance, altitude, GPS, and heart rate
• Combines split activities with pause events preserved
• Standard FIT files with per-source device attribution
• Preserves activity name, type, gear, and description
• Hides originals from your Strava feed (optional)
• Skips already-uploaded activities
Requires a Strava account and iOS 17+.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
ug fixes and improvements
• Fixed an issue where some activities appeared at the bottom of the feed instead of at their correct position
• Improved compatibility with Garmin devices when combining activities
• Better error diagnostics — problem reports now include more detail to help us resolve issues faster
The developer, Stephan Kurz, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stephan Kurz
- Size
- 6.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
English and 3 more
- English, French, German, Swedish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Stephan Kurz