KINETIC Link: Zone 2 · VO2 Max
Works with your sports watch
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Works with sports watches: set up on your iPhone, start on the watch, follow heart rate and zones live — and get the full report when you're done. 64 models supported.
Get Zone 2 right. Push VO2 Max up — this time on your sport watch.
KINETIC Link is the iPhone side of the KINETIC watch app, for sports watches: set your session up on the phone and push it to the watch; while you train, heart rate and zones stream back to a big phone dashboard; when you're done, the full report is on your phone.
(On Apple Watch? Look for "KINETIC: Zone 2 · VO2 Max" instead.)
KINETIC Link talks to our own KINETIC watch app. It does not control your watch's built-in features.
■ First, install KINETIC on the watch
Get the free KINETIC watch app on your sports watch, come back here, pick your watch, and you're linked.
■ Three ways to train
Open Session (OPS)
No type to pick, no time limit — it runs until you call it, and every second is recorded. Tap once each time you finish a rep and the count is kept for you.
Zone 2 (BASE)
The watch buzzes when you drop out of your zone, and again when you're back in — no staring at the watch. Aerobic base gets built exactly this way, session after session.
VO2 Max Intervals (PEAK)
Norwegian 4×4 and the Assault 60-second protocol built in — rounds, work and rest seconds all adjustable. The watch buzzes at every segment change, with a 3-2-1 countdown just before it.
■ Your phone on the floor is the dashboard
The clock is the hero; heart rate, calories and time in each zone sit below it. Turn the phone sideways and the numbers get big enough to read from two metres away.
■ Your own ceiling
In an open session, cross the heart rate you set and the watch buzzes right away, then every five seconds until you come back down.
■ Zones built from your numbers
Max heart rate, heart rate reserve or lactate threshold — with enough data, the most accurate method is picked for you. Got a table from your coach? Enter the five zone percentages yourself. Age, resting and max heart rate can come straight from Apple Health. Push once and the watch remembers — train on your zones even when the phone stays home.
■ Write it up whenever
Notes, photos and session detail (movement, sets, reps, weight) — add them to the report any time after you finish.
■ Every session, poster-ready
The verdict, your heart-rate curve and time in every zone, laid out on one share card.
■ Your data stays yours
No account, no sign-up, no server. Your records stay on your iPhone;
■ About tipping
Optional tips inside the app for anyone who wants to support development. Every feature is free — tipping unlocks nothing.
Free — no ads, no subscription.
Requires an iPhone (iOS 17 or later), a smart watch paired with your iPhone, and the free KINETIC watch app . Supports 64 models. The watch shows Traditional Chinese or English, following your watch language.
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The developer, Shau Bo Hsu, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shau Bo Hsu
- Size
- 3.3 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.
- iPhone
- Languages
- English and Traditional Chinese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Support Development $4.99
- Support Development $0.99
- Support Development $2.99
- Copyright
- © 2026 Shaubo Hsu