Know exactly what to work on at your next swim.

Tumbl watches your freestyle and tells you what matters most.
Film it. Upload it. Get better.

We'll email you when Tumbl launches.

How it works

Three steps.

No complicated setup, just your phone and a pool.

Get someone to film your freestyle from the side of the pool.

Upload the video to Tumbl. We start analysing straight away.

Know exactly what to work on before you get back in the pool.

What happens behind the scenes

Every video goes through two stages. Technical analysis, then a real coach review.

Layer one

Tumbl checks over 40 areas of your freestyle. Catch, pull, kick, breathing, rotation, timing, and more.

What this covers: Entry angle, hand position, pull path, kick timing, head position, breathing pattern, body rotation, stroke balance, and more.

Layer two

A real coach reviews your results, adds their expertise, and helps you prioritise what matters most.

Why this matters: Detailed analysis gets you the full picture. A coach who knows your swimming helps you focus on the right part of it.

Who it's for

You don't need to be fast. You just need to want to get better.

Swimmers who want to improve but don't have access to a private coach.

Coaches who want a tool to give more detailed feedback to their swimmers.

Triathletes, masters swimmers, club swimmers, keen improvers.

Anyone who's ever finished a swim and thought “am I even doing this right?”