Free · iOS · No account needed

Train harder.
Pay nothing.

Connect your Bluetooth sensors, generate workouts with AI, and upload to Strava automatically — all without handing over your email or credit card.

Download on the App Store
BLE
Bluetooth sensors
AI
Workout generation
TCX
Export format
$0
Forever free

What's inside

Everything you need.
Nothing you don't.

Connect Your Gear

Pairs with power meters, heart rate monitors, and smart trainers over Bluetooth. Watter remembers your devices and reconnects automatically every ride.

Train With AI

Tell Watter what you want to do — type it out or speak it — and get a structured ERG workout in seconds. Dial it in through a back-and-forth until it's exactly right.

Upload to Strava

Enable auto-upload and completed rides go to Strava the moment you stop. TCX export is always available if you want to take your data elsewhere.

Your Data, Your Device

Power, heart rate, and cadence are stored locally on your phone — not in someone else's cloud. No account required to get started. Just ride.

Free, forever.
Start riding today.

Available on iPhone · iOS 13 and later

Download on the App Store