RunWindow
Haptic pace & heart rate cues
Free · Designed for iPhone. Not verified for macOS.
Now on iPhone too: tune your window on the big screen, start the run on your watch with one tap, and see every run's time in window.
RunWindow taps you on the wrist when you drift outside the window you set, so you can run by feel without looking at your watch.
Pick a target: a heart-rate range or a pace range. Then press Start, on your watch or your iPhone, and drop your arm.
THREE CUES, NOTHING ELSE
• Fast taps, nonstop: speed up
• Slow taps, nonstop: ease off
• One tap: you're back in range
The cue tells you what to do, never which number moved, and it keeps going until you're back in your window. Hold a steady effort right on the edge and RunWindow stays silent. It waits for a real drift, not a wobble.
ON YOUR IPHONE
• Start on Apple Watch: one tap opens RunWindow on your wrist and starts the run
• Tune your window on a drag-to-set track, lit green inside, warm above, cool below
• Or set just a Max or a Min: one marker, cues on one side only
• Quick heart-rate zones from your age, and your own saved windows
• Every run in one place: time in window, the run drawn against your window, heart-rate zones, distance, pace and active calories. Delete any run you didn't mean to record
• Settings sync both ways with your watch
ON YOUR WATCH
• Color Field turns the whole screen into the signal: green in range, warming toward red when you push too hard, cooling toward deep blue when you're too easy, with the word on screen so colour is never the only cue. Swipe up or down for a tick ring or a tuner.
• Pause, resume, or change your window mid-run
• Trend and Summary pages after every run
• A one-minute demo shows every cue without running
BUILT FOR TRAINING, NOT TRACKING
• Heart rate streams live from the watch during the workout
• Pace comes from GPS, smoothed so a single bad fix can't buzz you
• Miles or kilometres
• Every run is saved to Apple Health as a workout
• No account, and no data leaves your devices
RunWindow requires an Apple Watch: the cues are taps on your wrist. The watch needs Health access for heart rate and Location access for pace; the iPhone app reads your runs from Apple Health to show your history.
Ratings & Reviews
• Max or Min: set one marker instead of a window. Max taps you only while you're over it; Min only while you're under it.
• Delete runs: swipe a run, press and hold it, or tap Delete Run at the bottom of a run.
• Run history grouped by week, with totals. Older runs show average heart rate by zone.
• Fixed: a window set on iPhone sometimes didn't reach the watch.
• Fixed: the iPhone app could ask for Health access again after the watch had asked.
The developer, David Fields, 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:
- Health & Fitness
- Location
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- David Fields
- Size
- 4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 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
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 David Fields