SumCha: Interval Running
Iksang Hwang Health & Fitness iPhoneiPadiPod touch
SumCha: Interval Running is a free Health & Fitness app for iPhone and iPad by Iksang Hwang. Requires iOS 26.0. Updated October 12, 2026.
- Price
- Free
- on the App Store
- Size
- 7 MB
- Age 4+
- Updated
- Oct 12
- 2026 · v1.1.0
Screenshots
About SumCha: Interval Running
Pick, tap, run. A simple, clean interval running app. · Choose a program like 2 min run / 1 min walk and just tap start · The running screen puts the current interval and time left up front, big and clear · Voice, haptics, and a 3-2-1 countdown tell you when intervals change · Build your own: warm-up, run, walk, repeats, cool-down · When a set ends you keep going as a free run, or add one more set · 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 (uphill included), 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.
What’s new
Version 1.1.0 · Updated October 12, 2026
• A weekly activity row on the run screen shows your week at a glance • Tap the pace to switch between interval pace and overall pace • You can now skip the cool-down too • After a set, choose a different interval to continue, and rounds keep counting up • Climbing now counts toward calories burned • Fixed the wrong time shown on the Live Activity and widgets while paused • The status bar is easier to read during run intervals
App privacy
The developer, Iksang Hwang, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
- Usage Data: Advertising Data
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
Used for: Third-Party Advertising, Analytics
Alternatives to SumCha: Interval Running
Looking for apps like SumCha: Interval Running? Here are 6 similar apps on the App Store.
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RunSpan: Interval Running
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Peaker 피커
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URun: Running Dashboard
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Fit: Workout Diary & Log
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ClearHiiT: Interval Timer
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Runlogue
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| SumCha: Interval Running | – | Free | October 12, 2026 | |
| RunSpan: Interval Running | – | Free | Oct 21, 2026 | Compare |
| Peaker 피커 | – | Free | Oct 23, 2026 | Compare |
| URun: Running Dashboard | – | Free | Sep 30, 2026 | Compare |
| Fit: Workout Diary & Log | – | Free | Oct 23, 2026 | Compare |
| ClearHiiT: Interval Timer | – | Free | Oct 27, 2026 | Compare |
| Runlogue | – | Free | Sep 4, 2026 | Compare |