Athalyze
Multi-device workouts, unified
Free · In‑App Purchases
Multi-device training, simplified. Athalyze merges Apple Watch, Garmin, Google Health, Whoop, and Oura workouts into one activity, keeping best metrics from each device.
Athalyze is an analytics-first training platform built for multi-device athletes.
If you record the same workout on multiple devices (Apple Watch, Garmin watch or bike computer, Whoop, Oura, or Google Health devices like Pixel Watch and Fitbit), Athalyze combines those recordings into one clean activity. It selects the most reliable data for each metric and preserves the originals so you can compare inputs and trust the result.
Multi-Device Merging
• Automatically combine multi-device recordings into a single, clean activity
• Choose the best data per metric for more accurate stats, and fine-tune device priority per metric so your preferred source always wins
• Compare metrics across devices on one chart — every source keeps its own consistent color, and you can tap a swatch to show or hide it
• Import FIT files with advanced metrics, including Garmin FIT developer fields like core body temperature
• See device source changes within a single recording when available, such as heart rate switching between Apple Watch and AirPods Pro
Vitals: Your Morning Health Check
• Wake up to last night's HRV, resting heart rate, respiratory rate, SpO2, skin temperature, and sleep in a single view
• Every vital is compared against your own typical range, so you know at a glance when something's off
• Get a morning alert when a vital falls outside your range
• Check your vitals right from your Apple Watch
• Daily metrics like steps and blood glucose are charted against your typical range too, so real changes stand out from day-to-day noise
Personal Records
• See your best efforts across a wide range of standard distances, from short intervals to marathon and ultra distances
• Track best power efforts across sprint to endurance durations, from seconds to one hour
• Filter by activity type, time period, and other criteria to zoom in on meaningful PRs
Curves
• Visualize your best effort as a curve on a chart
• Compare curves across different time periods to see how your fitness is changing
Correlation Heatmaps
• See how any two metrics relate across all your activities, like pace versus stride length or cadence versus ground contact time
• Pick any two metrics and any time period, and compare two periods side by side to see how the relationship has changed
Histograms and Trends
• Use histogram views to see how your training distribution changes over time for pace, power, stride length, core body and skin temperature, and other metrics
Gear
• Track shoes, bikes, and other gear, and see which workouts used each item
• Monitor total mileage so you know when it is time to replace or service gear
Devices
• See every device you have ever used and all activities that device has been part of
• View device history, including battery level trends when available
• Get notified when a device battery is low or critical
Challenges
• Create and join step challenges that accept step data from multiple devices so friends and family can compete together
• Keep accurate step totals even if you swap devices, such as a Garmin watch in the morning, Apple Watch in the evening, and iPhone when you are not wearing a watch
• Get push notifications when your place in a challenge changes
Built for athletes who want a training log that is accurate, complete, and easy to trust.
Terms of service & privacy policy:
https://www.athalyze.com/terms
https://www.athalyze.com/privacy
Training Load is here. See your Fitness, Fatigue, and Form over time, built from every activity you record.
• Training Load scores each activity from power, pace, or heart rate.
• Set your scoring priority per sport, or change the method on any single activity
• Thresholds like FTP and threshold pace are estimated automatically and adjust as you train. You can also set them manually.
More in this release:
• New hourly bar view of today's steps on the home screen
• Vitals sparklines can now show a 7 day average
• New Device Priority page lets you choose which device wins for each metric
• Heart rate dropouts from chest straps are now detected and corrected
• Refreshed icons and many small fixes
The developer, Perimint LLC, 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:
- Health & Fitness
- Location
- Contact Info
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Perimint LLC
- Size
- 50.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 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 10.6 or later.
- iPhone
- Age Rating
9+
- 9+
- Infrequent
Contests
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Athalyze Pro (Monthly) $9.99
- Athalyze Pro (Annual) $99.99
- Copyright
- © 2026 Perimint LLC