“Just surviving the swim.” Not anymore.

ZWIM makes swim training fun, measurable, and consistent. Power Paddles read every stroke. A game built around your effort pulls you back tomorrow. At home, between pool days.

You get the ZWIM Bench, patent-pending Power Paddles, and Propulsion Bands. The connected platform — game, analytics, social, content, and education — unlocks via membership. Set up in your living room. Train as often as you want.

A new category of swim training. Used at home, between pool days. Power Paddles measure Propulsive Watts in every stroke. A game built around your effort pulls you back tomorrow.

Cyclists got bike trainers. Rowers got ergs. Runners got treadmills with watts. Triathletes and swimmers were told to “just swim more” and went into races hoping to “just survive the swim.” We built the missing piece. ZWIM solves both.

ZWIM is for age-group triathletes and swimmers who want to swim faster, with more confidence, without missing the swim session they couldn't get to. You have a job. You have a family. You already train 8 to 15 hours a week. The swim is the session that's hardest to fit in and the one you feel least sure about when you do.

If you're tired of missing swim sessions. Bored of counting tiles in the pool. Tired of finishing a session with no idea if it helped. Tired of “just swim more” as the only advice. And tired of going into race day hoping to “just survive the swim.” ZWIM is built for you.

No. ZWIM is a tool you use to add more swim-specific training to your week. The pool builds water feel, breathing, body rotation, kick integration. Things only the water teaches. ZWIM builds the propulsion engine: isolated stroke work, live data on every stroke, training you can do at home, more often, on your schedule.

Use it alongside your pool sessions to be more consistent and put more swim-specific work in your week. We are also collaborating with Dr. Mário Costa (UTAD, CIDESD) on biomechanic research to make sure what ZWIM measures matches the science.

Heads-up on a question we get a lot: we have multiple self-reports from users — including our own founder — who got faster swimming on the legacy ZEN8 with very limited pool time. We have not formally validated this, results vary, and we still recommend you swim as much as you can in actual water. ZWIM extends your training. It does not replace the pool.

The force you generate to move yourself forward through the water, stroke by stroke. Not your total effort. The part of your effort that actually becomes speed.

What it unlocks: the gap between effort and result. You see your wasted energy in real time. You see the asymmetry between your left and right pulls. You see your pace before the lap finishes. You stop guessing why you're slow and start fixing it.

Cyclists have known their power output for thirty years. Runners got watt metrics a decade ago. Swimmers have been guessing. Propulsive Watts ends the guessing.

The Smart Swim Trainer hardware:

• The ZWIM Bench
• Power Paddles (patent pending)
• Propulsion Bands

The ZWIM Membership unlocks the connected platform — and that's more than the game. It's the game, your full analytics dashboard, the social platform built for swimmers, training content and education from the team that broke the British Ironman record, and ongoing development driven by community feedback.

One platform built for swimmers. Getting better every release.

Alpha testing is underway with a small group of athletes. The paid beta opens shortly. Waitlist members get to know first.

Pricing for hardware and membership goes live when you're invited. Founder pricing is locked for waitlist members in the first three waves.

ZWIM is a Smart Swim Trainer designed to be used at home, not in the pool. Some swimmers call this category "dryland" training. ZWIM goes further.

It is the first Connected Swim Trainer that measures Propulsive Watts in every stroke and pairs that data with a game built around your stroke. Most "dryland" setups build general strength. ZWIM trains the propulsion phase of your actual swim stroke, between pool days.

And unlike traditional dryland work, you actually want to do it.