They give you a plan. You miss a session. They plow on. bowermanOS rewrites the week.
Skipped training last week? Your training plan should care.
A personal endurance coach who builds your plan, then rewrites it when life gets in the way.
Join waitlist
50+ athletes already on bowermanOS
How it works
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1
Connect wearables
Intervals.icu is where your wearable's data lives. One tap to link it to bowermanOS.
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2
Get coached
Goal race, training history, off-limits days, the workouts that work for you, every session analyzed. Your personal coach supports you in chat 24/7.
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3
Train. Adapt. Repeat.
Every week, a fresh plan calibrated to what you actually did. When life intervenes, your coach rewrites it.
Requires an Intervals.icu account and Telegram. Both free.
Why bowermanOS is different
ChatGPT can't read your wearable, can't write workouts back to it, and forgets you between conversations. bowermanOS does all three, in one chat.
A great coach is irreplaceable. If you have one, keep them. If you don't, bowermanOS is here on a Tuesday morning, on holiday, at 11pm on a Sunday. Endless patience, no missed messages.
Built for athletes who…
- are training for a goal race (marathon, half, ultra, triathlon, anything in between)
- or just want to train smarter without a race on the calendar
- already train with structured workouts (or are ready to start)
- own a wearable and care about their data
- are tired of juggling Strava, TrainingPeaks, ChatGPT, and a spreadsheet
What athletes are saying
★ ★ ★ ★ ★
Pretty much exactly what I was looking for. Discussing and debriefing sessions without the hassle of sending data. When there are issues with session structures, it manages to fix them. The fact that it sources the data from where everything I do is stored is a nice bonus.
★ ★ ★ ★ ★
Most training plans fall apart the moment life happens. This one rewrites the week around what I actually did. First time training has felt sustainable instead of stressful.
★ ★ ★ ★ ★
Used to lose half my Sundays to planning the week. Not anymore. The plans it writes are sharper than anything I'd put together myself.
Built on the science
Polarised training. Zone 2 base. Periodisation. Fueling. Every plan reflects the methods that actually work, not whatever's trending.
FAQ
What do I need to get started?
An Intervals.icu account and Telegram. Both free.
Which wearables work?
Garmin, Suunto, COROS, and Polar, synced via Intervals.icu. If your wearable shows up in Intervals, it works.
What happens when I miss a session?
The week gets rewritten around what you actually did. Sick, travelling, unmotivated. That's exactly what bowermanOS is there for.
What data do you see?
Your activities and recovery data (sleep, HRV, soreness), plus what you say in chat. We never sell or share your data.
How is this different from ChatGPT?
ChatGPT can't read your wearable, can't push workouts back to it, and forgets you between chats. bowermanOS is connected to your training data, writes structured workouts to your watch, and remembers everything between sessions.
Do I need a goal race?
No. We coach goal-driven athletes (marathon, Ironman, BQ chasers) and athletes who simply want to train smarter without a race on the calendar.
What does it cost?
7-day free trial, no card required. Then CHF 14.99 / month. Cancel anytime.
Built by athletes, for athletes
Daniel
Co-Founder
Runner and triathlete for 10+ years. Tried and tired of both static training plans and paying coaches. Early employee at Trade Republic.
Max
Co-Founder
Former soccer player (FC St. Gallen, UC Berkeley). Pivoted into running, sub-3 marathoner, currently training for full-distance Ironman. Ex-Goldman Sachs.
Daniel and Max are childhood friends. They built bowermanOS because they were tired of pasting workouts into ChatGPT every Sunday. They wanted training that adapts itself, on autopilot.
Join waitlist50+ athletes already on bowermanOS