Tsumu Run

Heart rate zone training!

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Your easy runs might not be easy. Tsumu Run stacks your heart rate zone time from Apple Watch and shows your training as a single shape. Zone 1 at the base, Zone 5 at the top — a well-built week forms a pyramid. WHAT YOU SEE - Intensity balance — your shape against the ideal pyramid, judged in three seconds - Training volume — stacked zone time by day, week, month, or year - Zone breakdown — the exact split across Zone 1 to 5 - Calendar — every day coloured by the character of that session - Widgets — days run this month and the shape of your training BUILT FOR ZONE TRAINING If you follow polarized or pyramidal training, you already know the trap: easy runs creeping into the middle zone. The standard fitness apps show one workout at a time, so the pattern stays invisible. Tsumu Run works across weeks, months, and years. PRIVATE BY DESIGN Your health data is read from Apple Health and stays on your device. Nothing is uploaded. REQUIREMENTS Runs recorded on Apple Watch with watchOS 27 or later, so that heart rate zone data is available.

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Minor updates

Version 1.2

The developer, Koichiro Ueki, 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:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Koichiro Ueki
Size
  • 9 MB
Category
  • Sports
Compatibility
Requires iOS 27.0 or later.
  • iPhone
    Requires iOS 27.0 or later.
  • Mac
    Requires macOS 27.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 27.0 or later.
Languages
  • English and Japanese
Age Rating
9+
Copyright
  • © 2026 Koichiro Ueki
  • Developer Website
  • Privacy Policy

    • More by Koichiro Ueki