Swim training apps compared: SwimTune, MySwimPro, FORM and Garmin

We make one of these, so read this with that in mind. What follows is our honest read on what each tool is genuinely best at, including the cases where ours is the wrong choice.

Last updated 11 August 2026 · 9 min read

The short answer

Pick by the problem you actually have. If you just want your swims recorded, the Apple Watch's built-in app is free and good enough. If you want a big catalogue of structured workouts, MySwimPro. If you want live numbers in front of your eyes mid-length, FORM. If you want your own data turned into a plan that adapts to your recovery, SwimTune.

The swim app market gets described as if these products compete head to head. They mostly do not. They solve different problems, and the reason people end up disappointed is usually that they bought the answer to a question they were not asking.

Three questions sort the field quickly:

• Do you know what to swim when you get to the pool? If no, you want workouts, which is MySwimPro's territory, or generated plans, which is ours.
• Do you need feedback during the swim? If yes, that is FORM's whole reason to exist and nothing else does it as well.
• Do you already train hard and want to know whether you are training too hard? That is training load and recovery, which is where SwimTune concentrates and where most swim apps are thin.

Side by side

The honest summary is that no tool here wins on every row, and the two most common needs, recording swims and knowing what to swim, are met well by more than one option.

The Apple Watch Workout app

It is free, it is already on your wrist, and for recording swims it is genuinely good. Any paid app has to justify itself against this baseline, and plenty of swimmers never need to.

Apple's built-in swim tracking counts laps reliably, detects stroke type across all four strokes, and gives you splits, stroke count and SWOLF without you doing anything beyond setting the pool length. For a swimmer who knows what sets they want to do and simply wants a record afterwards, that is the whole job done at no cost.

What it does not do is tell you what to swim, hold a season together, work out whether this week's training is more than you can absorb, or turn three months of data into an observation about your technique. It is a recorder, not a coach, and it does not pretend otherwise.

MySwimPro

The most established swim training app, and the strongest choice if what you want is a large, well-made library of structured workouts and coaching content.

MySwimPro's core strength is breadth: thousands of structured workouts, training plans built around goals like endurance, speed or triathlon preparation, a workout of the day, and technique content including video instruction. Sessions can be pushed to your wrist so you get told what to do set by set, and it supports both Apple Watch and Garmin devices natively. It has been doing this for years and the catalogue shows it.

Where it fits: swimmers who want a proven session to follow today and a plan to work through, with the reassurance of a large body of coach-designed content behind it. If your problem is "I get to the pool and do the same thing every time", this solves it directly.

The trade-off: plans built from a catalogue start from what the plan says, then adjust. The starting point is a well-designed template rather than your own data. For many swimmers that is exactly right, and a good template beats a bad bespoke plan every time.

FORM smart goggles

The only option here that solves in-set feedback, showing your pace, splits and interval in a display inside the goggles while you are still swimming. Nothing else on this list does that.

Being able to see your 100m split at the wall without stopping, or hold a target pace mid-set without guessing, changes how you execute a session. FORM pairs with Apple and Garmin watches, works in open water as well as the pool, and the battery lasts through any realistic training week.

The trade-offs are real: it is a hardware purchase of several hundred dollars on top of any subscription, the heads-up display takes a few hundred metres of swimming to get used to and does slightly cut into peripheral vision, and it is one more thing to charge. Everything it shows you is available after the swim from a watch you already own. You are paying specifically for the timing of the information, not the information.

Where it fits: swimmers doing structured interval work who find that stopping to read a watch breaks up the set, and who will genuinely use live pacing rather than just enjoying the novelty.

Garmin

Excellent hardware with strong tracking, particularly for open water where GPS route recording is a real advantage, but the software leans towards presenting data rather than prescribing training.

Garmin watches, the Forerunner and Fenix lines especially, are well regarded for swim tracking and are the reference choice for multisport athletes who need one device across swim, bike and run. Open water GPS tracking is a genuine strength: you get a route and a mapped distance in a way that watch-based swim apps generally do not provide. Garmin Connect gives you training load and readiness metrics across all your sports.

The trade-off: those load and readiness numbers are cross-sport and general. What you tend not to get is swim-specific prescription: what set to swim on Thursday given how the last three weeks went. The Swim Coach app adds structured plans, but the ecosystem's centre of gravity is measurement, not coaching.

Worth noting on heart rate: wrist-based optical sensors struggle underwater as a matter of physics, and this affects every brand. Independent testing has found substantial under-reading on open water swims across manufacturers, Garmin included. If you train by heart rate in the water, a chest strap is the only reliable answer regardless of which watch you own. More on in-water heart rate accuracy.

SwimTune

Built around one idea: your next session should be written from your own recent data, including how well you are recovering, rather than from a template you happened to pick in January.

SwimTune records swims on Apple Watch or imports them from Apple Health, then uses that history to generate sessions. Sleep, HRV and resting heart rate feed a daily readiness score, and when readiness drops the plan backs off rather than pushing a threshold set into a body that cannot absorb it. Training load is tracked swim-specifically. A guided CSS test sets five pace zones (Recovery, Aerobic, Threshold, VO2max and Sprint) so every prescribed interval has a real target behind it. Races go in a calendar with A, B and C priorities, and the plan reshapes around them, taper included.

Open water is treated as its own thing rather than a pool swim in a lake: sessions can be recorded natively on the watch, and open water pace is deliberately kept out of your CSS calculation and personal bests, because current, sighting and the absence of push-offs make that pace incomparable.

Be aware of these limitations:

• No native Garmin app yet. It runs on Apple Watch and iPhone. Garmin swims import through Apple Health, but a native on-watch Garmin experience is planned for fall 2026, not available today.
• No GPS route or map of your open water swim. Distance comes from the workout your watch measured. If seeing your route on a map matters, Garmin does that and we do not.
• No bike or run training. It is a swimming app. Triathletes use it for the swim leg alongside something else for the other two disciplines.
• Drill instruction is written, not filmed. The drill library explains each drill in text; if you learn technique best from video, MySwimPro's content library is stronger.
• It is new. MySwimPro has years of refinement behind it. We do not.

Tracking, full history and analytics, training load and the recovery signals are free with no time limit. The AI-generated plans, the coach and session adaptation are SwimTune Pro at $19.99 per month or $109.99 per year, with a 7-day free trial.

How to choose

Match the tool to the gap in your training, not to the longest feature list. Most swimmers need one of these things, not all of them.

One last piece of advice that costs nothing: whichever you choose, the app is not the variable that decides whether you get faster. Swimming three times a week with a mediocre plan beats swimming once a week with a perfect one. Every tool on this page is downstream of that.

Common questions