About

Built by a swimmer.

Athylos is built by Wilson Beckman, former Division I swimmer at Indiana University.

Swimming, meet modern technology. Athylos eliminates the barriers to high performance.

How it works

AI plans the session. Pace math sets every clock. Your Apple Watch runs it rep by rep. A safety check runs before anything reaches you.

Race-pace targets are sharpest for 50s, 100s and 200s. Longer events use an even-split estimate.

Your data trains you, not ads. Anything more is opt-in, never sold. Privacy Policy.