Pool freediving on
Apple Watch Ultra
DYN, DYNB, DNF and STA on the wrist. Pool mode in FreeDive Ultra times every rep and every rest and saves one pool length per rep. With Pro, it runs your pool alerts and guided workouts.
Push off. Surface. Dial. Rest. Go again.
A DYN, DYNB or DNF set on the real watch screens. Press the Action Button to try the stopwatch underwater and to save a different distance at the surface.
- Start Pool and choose DYN, DYNB or DNF, or let Auto Launch do it.
- Push off. Past the start depth, the rep starts on its own: rep time, depth and heart rate.
- Action Button underwater runs a stopwatch without ending the rep.
- Surface. The rest timer starts, with your heart rate, rep count and last rep.
- Swam a 50 in a 25 m pool? One length is saved already; turn the Crown to 50 m and press the Action Button.
- Rest, then go again. With the Rest alert on (Pro), the timer turns amber and buzzes at your time.
- Sets, not just dives DYN, DYNB, DNF and STA, every rep and rest timed: 8 x 25 m, 6 x 50 m, eight statics, whatever the plan.
- Every rep detected Push-off to surfacing, saved with its rest and one pool length. The Crown changes it when you swim further.
- Hands-free Crown and Action Button only. Auto Launch starts the session as you pass the start depth; you end it when you are done.
Set it up once
Pool Training settings, on the watch or iPhone, kept in sync. Pool length and start depth are free; Default Discipline and pool alerts are Pro.
Pool length
25 m, 33.3 m, 50 m, 25 yd, 50 yd, or a custom length for the hotel pool.
Start depth
0.8 m by default, 0.6 to 1.2 m. Deeper so a dip at the wall is not a rep, shallower for a shallow pool.
Pool alerts PRO
Dive, Rest and STA buzz at your time, once or every interval. Breathe Up counts down before the first rep; a long buzz means go.
Static, on the Action Button.
Choose STA and the watch waits on READY. The Action Button starts and stops each hold; every hold is saved with the rest before it.
Start Pool
DYN, DYNB, DNF, STA and Workouts. With Pro, your Default Discipline is highlighted and starts from the Action Button or Auto Launch.
A hold
Hold time, hold number, best hold and heart rate. With Pro, the STA alert buzzes and the time turns amber.
Your set, run by the watch. PRO
Run the Static CO2 and O2 tables, or build your own sets on iPhone or iPad in Train, then Pool. Pick it on the watch under Start Pool, then Workouts.
Select a workout
Static CO2 (rest gets shorter), Static O2 (hold gets longer), then your own workouts.
Rest, counted down
Counts down to the next set, with its distance. Go early and the plan moves with you.
Train, then Pool
Each discipline’s workouts: the static tables and your own.
Every set, before you start
Every set and rest, and afterwards, what you planned beside what you did.
Underwater and at the wall.
Underwater
Rep time, rep number, depth and heart rate. Action Button: a stopwatch.
Surface
Rest time, reps, last rep and heart rate, and the distance: the Crown changes it, the Action Button saves it.
After the session
A summary as you end. With Pro, every rep or hold in the watch logbook.
Every rep, in the log
On your iPhone the moment you end it, on your iPad through iCloud, and at app.freediveultra.com. Opening it in full is Pro.
The set at a glance
Profile, reps, best distance and longest rep, with the discipline you chose.
The rep list
Time, rest, heart rate and distance. Correct a distance and the totals follow.
One rep at a time
Rest, distance, rep time, and heart rate before and after.
Lifetime pool stats sit under the Pool filter in the logbook, and every pool session goes to Apple Fitness as a workout with heart rate and calories while HealthKit Integration is on in Settings, General Settings. It is on by default.
What pool freedivers ask
Does Apple Watch Ultra count lengths in the pool?
It counts dynamic apnea reps. A rep is one push-off to one surfacing, and a wall turn happens underwater where the watch cannot see it, so a 50 in a 25 metre pool is one rep. Every rep saves one pool length on its own. For a 50, turn the Crown to 50 m and press the Action Button to save it.
Is Pool mode free?
Recording is free: DYN, DYNB, DNF and STA, with every rep and rest timed on the watch. Pool length and start depth are free too. Default Discipline, pool alerts, guided workouts, and opening your pool sessions in full on the watch, on iPhone and on the web are Pro features, with a 7-day free trial. Upgrade and every pool session you have already recorded opens in full.
Can I run static tables in the pool?
Yes, with Pro. Choose Start Pool, then Workouts, and select Static CO2 or Static O2. The watch counts down every rest and buzzes when a hold reaches its target, and the Action Button starts and stops every hold.
Can I build my own pool workout?
Yes. Guided workouts are a Pro feature. On iPhone, open Train, then Pool, and build sets of apnea and rest for DYN, DYNB, DNF or STA. Then select it on your watch before entering the water: Start Pool, then Workouts.
Which Apple Watch does it work on?
Every Apple Watch Ultra: the original, Ultra 2, Ultra 3 and Ultra 4. The depth sensor is what starts and ends each rep. FreeDive Ultra is for Apple Watch Ultra only.
Does it work in a 25 yard pool, or a short hotel pool?
Yes. The presets are 25 m, 33.3 m, 50 m, 25 yd and 50 yd, and a custom length covers anything from 10 to 100 metres or 10 to 110 yards.
Does Auto Launch work in the pool?
Yes. With Pool selected, Auto Launch starts the session the moment you pass your pool start depth, 0.8 metres by default and adjustable from 0.6 to 1.2 metres. It starts your Default Discipline, a Pro setting, or DYN without Pro. Walk in and push off without touching the watch.
Do I need a buddy for pool training?
Yes, every session. Blackouts in the pool happen at the surface and at the wall. Train with a buddy who is watching, not swimming.