Diastra · Heart Rate Training
Adaptive plans, 5k to marathon
About
This app creates personalized training plans based on your real performance and adapts them as you progress. It tracks your workouts minute-by-minute, categorizing your effort and showing you if your training is effective. It works with your existing workout data and provides real-time feedback on your Apple Watch.
What's New in Diastra · Heart Rate Training
1.2.3
October 7, 2026
Every run now shows its miles on Workout Analysis. The number fills with the heart bands you ran in, from warm up at the bottom to VO₂max at the top. Hold it to read the miles in each band. On a treadmill, scan the treadmill's screen or type its number, and Diastra uses that distance for the run, your week and your pace. Plan now leaves the two days after a half marathon or marathon free. Share and Fix on Workout Analysis are two separate buttons again.
MoreSubscriptions & In-App Purchases
Annual
Full access to Diastra, billed once a year
FAQ
What is Diastra's subscription cost?
Diastra requires a subscription for full access. The specific price for your region is displayed before you confirm the purchase. A 7-day free trial is included with the subscription.
Does Diastra have ads?
No, Diastra does not contain advertisements. The application is ad-free.
What devices does Diastra support?
Diastra is available on iPhone and Apple Watch, allowing you to record workouts from your wrist and receive live heart rate feedback.
How accurate is Diastra's workout analysis?
Diastra reads every workout minute-by-minute against your normal performance, sorting effort into categories like Easy, Threshold, and VO₂max. A hard minute only counts when the effort is truly held, ensuring counted, not guessed, effort.
Can Diastra import past workouts?
Yes, Diastra starts on day one reading every workout your watch ever saved, integrating your historical data into its analysis and planning.
How often is Diastra updated?
The latest version of Diastra is 1.1.1, which was last updated on September 9, 2026. Updates are released to improve functionality and reliability.
Is Diastra suitable for beginners?
Diastra is a general wellness product and requires users to check with a doctor before starting new training. Its adaptive plans aim to adjust to your current fitness level, but it's best used by those ready to engage in structured training.
What is the age rating for Diastra?
Diastra has an age rating of 4+, making it suitable for a wide range of users. The app is designed for general wellness and fitness tracking.
