- All the workout details (heart-rate chart, intervals, recovery) are now on one page when you finish a workout. - New: discard a workout you started by mistake or as a test. It's removed from your history and from Apple Health. - Fixed: the Apple Watch app could keep running after a workout ended, keeping the screen on and the heart-rate sensor active. - Fixed: a workout started on iPhone with an Apple Watch could show up twice in Apple Health, and was saved as HIIT whatever sport you picked.

Fixed a bug: when you start a workout on your iPhone and use a Bluetooth heart-rate monitor, your heart rate shows on your Apple Watch.

- Warm-ups now start at 5 minutes by default. Prefer 10 minutes? That option is still available in Settings. - New setting to keep Apple Health tidy: if your heart-rate monitor's app (Whoop, Garmin, Polar) already logs your workout, you can turn off the 4x4 app's own Apple Health save so a session isn't counted twice. That option is in Settings, in the Data section.

Now works with any Bluetooth heart-rate monitor. - Pair a Bluetooth chest strap or a watch in broadcast mode (Polar, Garmin, Whoop, Wahoo, and more) and get the live heart rate zone coaching. - Choose your heart-rate source from the home screen or Settings; the app remembers it and reconnects automatically. - If a monitor drops out mid-workout, the app reconnects on its own - and falls back to your Apple Watch if you're wearing one.

Improved first-run setup: refreshed onboarding screens, clearer wording, and a fix for a title that could wrap awkwardly on some iPhones.

Updated preview images.

- A new design skin for the app and Apple Watch. - Pick your activity (any cardio: run, bike, row...) and each session saves to Apple Health as that workout type. - An effort check after each workout that helps dial in your heart-rate zones. - Separate sound and haptic cue controls, plus an optional interval-start sound on the watch. - Estimated calories, so your workouts credit the Move ring. - A fitness trend that follows your recovery and time in zone over recent sessions. - Workouts done on the watch without your phone now sync into your history. - Reliability improvements on the watch and in history.

Your Norwegian 4×4 workouts now build a picture of your fitness over time. WORKOUT HISTORY & DETAIL Every workout is saved with full heart-rate detail. Tap any session to see your heart-rate curve with each phase shaded, a per-interval breakdown, and your time in the target zone. FITNESS TRENDS A new trends dashboard shows where you're heading — your heart-rate recovery after each interval and your average interval heart rate, each with a sparkline and a week-over-week trend — plus your weekly workout count and current streak. POST-WORKOUT SUMMARY See your duration, peak heart rate, and average heart-rate recovery the moment you finish. MORE RELIABLE APPLE WATCH SYNC Live heart rate stays current on your iPhone even with your wrist down, and starting a workout on one device keeps the other in sync. YOUR DATA, YOUR CONTROL All history is stored privately on your device. Delete any single workout, or clear your whole history, at any time.

This update improves how your iPhone and Apple Watch stay in sync during a workout. • Fixed an issue where opening the app on your iPhone after starting a workout on your Apple Watch could interrupt or end the workout — your iPhone now picks up the in-progress workout and stays in sync. • Fixed a case where the app could briefly show a completed workout right after opening. • General reliability improvements for watch-to-phone workouts.

Fixed the Apple Watch warm-up timer so a workout started from your watch now begins at the full warm-up time. Reliability improvements to unlocking the app.

Bug Fixes & Improvements Fixed an issue where the Apple Watch would show a 3-2-1 countdown when the workout was started from the iPhone. The countdown now only appears for watch-initiated starts. Heart rate display now indicates when readings are stale — if the watch connection stalls, the BPM dims and shows a status message ("Watch not reachable — open the watch app" or "Waiting for heart rate…") so you're never misled by a frozen number.

Workout history is here. See your past workouts — every Norwegian 4×4 you complete now appears in a new History screen, with duration, average and peak heart rate, and a phase-by-phase breakdown of your time in zone. Your existing workouts, automatically — past 4×4 sessions you've saved to Apple Health are imported the first time you open this version, so your history is there from day one. Manage your data — remove any workout from your history whenever you like. Everything stays on your device. Watch reliability improvements — smoother, better-aligned timing between your iPhone and Apple Watch when you start a workout.

• Apple Watch: 3-2-1 countdown animation when a workout begins • Heart rate now displays during warm-up and cool-down, not just intervals • A prompt now appears at the start of each workout to open the Apple Watch app for heart rate tracking • Fixed: age entry screen now has a Done button on the keyboard