by 01 Apps
TextFit
Structured workouts from plain text, in any language.
Type your workout the way you'd text it to a training partner. TextFit turns it into a structured workout and sends it to your Garmin, Wahoo, or Apple Watch. No block builders, no dragging steps around.
Write it like a text
“10 min easy, 5 x 3 min hard with 2 min jog, cool down.” That's a workout. Write it in whatever language you think in.
AI structures it
Every rep, recovery, and target lands in the right block. Check it, tweak it, and you're done in seconds.
Syncs to your devices
Sends the finished workout to Garmin and Wahoo via intervals.icu, or straight to Apple Watch. It's on your wrist before the warm-up.
Free to start. Pro when you need more.
No account needed. Pro raises your monthly limits — buy it on the web, then download the app.
Free training tools
Five calculators for pace, power, heart rate, fueling, and hydration. No sign-up, nothing to install.
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Race time predictor
Predict your 5K to marathon finish time, and the pace to hold, from one recent run.
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W/kg and FTP zones
Turn your FTP and weight into W/kg and watt ranges for all six power zones.
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Sweat rate
Find out how much fluid you lose per hour and how much to drink to replace it.
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Carbs and fueling
Get a carbs-per-hour target and the gels and bottles it takes to hit it.
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Heart rate zones
Get your five heart rate zones in bpm with the Karvonen or LTHR method.
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Typed workouts
Interval sessions written as one line you can paste, with how to run and scale each.
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