My Candid Review After Two Months of Intensive Use

Connected Features

Notifications and calls

Rich notifications. Reliable dictated answers. Clear calls indoors. Outside, it depends on the wind.

Third-party music and apps

Spotify, Strava, HealthFit. Everything is going well. The watch performs well, the menus are fluid, the data arrives quickly. In short… it’s going great.

Battery life in standalone mode (5G/eSIM)

In active 5G without iPhone, count on a busy day. Sport + streaming = battery melts faster. Logic.

Sports use

Exercise App and Sports Profiles

Running, trail running, cycling, swimming, recreational diving. Numerous profiles. Customizable fields. L’Apple Watch Ultra 3 sport speaks to demanding runners.

Power and cadence measurement

Estimated running power at the wrist. Cadence displayed live. Compatible with Bluetooth bike sensors.

Workout Buddy detailed

Synthetic voice. “Faster pace than usual.” “New 5 km record.” In the moment, it motivates. Afterwards… we can cut.

Tracking running, cycling and indoor sports

In the race, clean track. By bike, stable speed. In the gym, consistent cardio. Nothing exotic. Just reliable.

Analysis of training data and third-party apps (HealthFit, Strava)

Simple export to Strava. HealthFit offers advanced metrics. Training load. Balance. Here we go into detail.

Apple Watch Ultra 3 navigation and mapping

Maps & Route Tracking App

GPX route import. Precise tracking. Off-track vibration alert. Useful in dense forest.

Offline and personalized mapping

Downloadable maps. Consultation without network. Smooth zoom. Not at the level of a dedicated outdoor watch for extreme exploration, but solid.

Comparison of satellite connectivity vs Garmin

Apple Satellite: simple emergency message. Garmin: more expedition-oriented functions. Two philosophies. It’s up to you.

Measurement accuracy

Heart rate (tests and scores)

Low gap in endurance. More marked in short sprints. Very good overall score for an optical sensor.

GNSS / GPS (field comparisons)

Dual active frequency. In dense city, clean track. Under forest cover, slight drift sometimes, but nothing dramatic.

Altimeter and altitude profiles

Height difference consistent with reference GPX trace. Barometric altimeter responsive to rapid changes.

Limitations and practical advice

Tighten the sports bracelet securely. Clean the sensor after session. And deactivate 5G if you go away from an outlet for a long time.

Accessories and compatibility

Compatible external sensors

• Bluetooth cardio belts
• Cycling cadence/speed sensors
• Wireless headphones

Bluetooth connection and third-party apps

Stable connection. Few dropouts. iPhone integration remains a strong asset.

Final verdict

Highlights

Ultra readable screen. Increased autonomy. Accurate GPS. Rich health functions. Frankly, I find this connected watch really excellent.

Weak points

High price. Impressive format. Autonomy which drops in 5G + extended GPS. Not the lightest on the market.

Who is this watch for?

For the demanding athlete. The trail runner. The cyclist. Anyone who wants a robust, connected watch and complete health monitoring without leaving the iPhone world.