Film one length from the side. SwimAI scores your freestyle, names the two faults that cost you speed, and builds your week around fixing them.
Most swim apps count your laps. SwimAI watches you swim.
Film any swim — from the deck, in any pool. Kai, your AI coach,
reads your stroke frame by frame: catch, pull, breathing, body
position. You get a technique score, the two faults that matter
most, and a plain-English explanation of why they cost you speed.
Then Kai builds your training week around exactly that.
NEW TO SWIMMING?
Start with Foundations — the first strokes, in the shallow end, at
your own pace. No filming needed until you want it.
SWIMMING TO GET FIT?
Say the goal and Kai builds the week for it: endurance sets,
intervals, and a plan that adapts when life gets in the way.
YOUR WEEK, BUILT FOR YOU
• A real weekly plan — warm-ups, drills, main sets, cool-downs —
built from your technique, your level, and your goals
• Every drill has a how-to, and nearly every pool drill has a video
• Sessions land on your Apple Watch: reps advance on wall touches,
hands-free
• Miss a week? The plan adapts. No guilt, just adjustment.
DURING THE SWIM
• Live heart-rate zones on your watch, your lock screen, and your
phone — one glance, same numbers everywhere
• Rest countdowns, rep tracking, and pace as you swim
• Your phone mirrors the wrist session — coach from the deck
AFTER THE SWIM
• Records: fastest 100, longest swim, best SWOLF, best week
• Trends no other platform can draw: your technique score charted
against your pace and heart rate, week by week
• Heart-rate recovery after every effort — the fitness signal
serious swimmers watch
• Stroke mix, split evenness, and every number Kai reads — you see
what your coach sees, always
ASK KAI ANYTHING
Chat with your coach about your stroke, your plan, your race.
Kai knows your swims, your scores, and your body's signals from
Health — sleep, resting heart rate, readiness — and coaches
accordingly.
Kai coaches in 33 languages, in the vocabulary a coach in your country would actually use.
One membership. Everything included. Start with a free month.
The watch round: your pool, your set, on your wrist.
• Your pool, any length. Set it on the watch in meters or yards, and every distance is whole lengths of the pool you are in.
• Build a set on the wrist: warm-up, drill, main, sprint, easy and rest, one tap each.
• Open water stays open water. No walls, no lengths, just the swim.
• The set screen says what you are swimming, how far in you are, and the distance so far.
• The last five seconds fill the screen, Water Lock goes on, and the app stays up from the first length to the last.
• Heart rate and Health, said plainly: if access is off, the watch tells you before the swim and the phone opens the door.
• Drill videos sound the way they were recorded, and a drill plays the moment you tap it.
Version 1.7.2
The developer, Askesis Intelligence, 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 Linked to You
The following data may be collected and linked to your identity:
Health & Fitness
Purchases
Contact Info
User Content
Identifiers
Usage Data
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Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More