SumCha: Interval Running

Voice & haptic interval timer

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Run without looking at your screen. Voice and haptics tell you when to switch. Two minutes fast, one minute walk. Run intervals without watching the screen. · Voice, haptics, and a 3-2-1 countdown tell you when intervals change · Build your own program: warm-up, run, walk, repeats, cool-down · When a set ends the run keeps going as a free run, and you can switch between intervals and free run any time · Start, pause, and end from the Lock Screen, Dynamic Island, widgets, and Control Center · Auto-pause when you stop, resume when you run · Distance, pace, and calories, weekly/monthly/yearly summaries, and your route on a map · Sync your history across your devices through your own iCloud (the developer can't see it) Free to use. Ads appear only on the History tab and after a run summary — never on the running screen. One purchase removes all ads.

Ratings & Reviews

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The developer, Iksang Hwang, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Identifiers
    • Usage Data

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
Iksang Hwang
Size
7.1 MB
Category
Health & Fitness
Compatibility
Requires iOS 26.0 or later.
  • iPhone
    Requires iOS 26.0 or later.
  • Mac
    Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.0 or later.
Location
This app may use your location even when it isn’t open, which can decrease device battery life.
Languages
English and 7 more
  • English, French, German, Italian, Japanese, Korean, Portuguese, Spanish
Age Rating
9+
  • 9+
  • Learn More
  • Contains
    Advertising
    Health or Wellness Topics
In-App Purchases
Yes
Copyright
© 2026 Iksang Hwang
  • Developer Website
  • Privacy Policy

    • More by Iksang Hwang