Julian Flieller

I built this because I needed it.

Julian Flieller - San Francisco

Find me

I'm an AI engineer and endurance athlete in San Francisco, training for a marathon. Most of my time goes to running and lifting. I track everything: Strava for runs and rides, Hevy for gym sessions, WHOOP for sleep and recovery, and Withings for body measurements.

The problem was always context. I'd screenshot my Strava summary or copy my WHOOP recovery score and paste it into Claude or ChatGPT to get advice. Every conversation started from zero - no history, no profile, no awareness of what I did yesterday or how I slept last night. It worked, but barely.

So I built athletedata.health. It connects directly to all of those platforms and gives the AI real-time access to my actual training data. When I finish a run, it messages me on Telegram with analysis. When I wake up, it checks my sleep and recovery and tells me if I should adjust the plan. I can snap a photo of my meal and it tracks the macros - which has been a lifesaver since I'm trying to lose some extra fat. The coach remembers everything: my goals, my injury history, my preferences, what we talked about last week.

I'm sharing it because other people have the same problem. If you use any combination of fitness apps and want an AI coach that actually knows your data, this is it. And if there's a platform you want connected or a feature you'd find useful - reach out. I'm happy to build it.

Try it yourself

Connect your apps and start chatting with your AI coach. 7 days free. No charge until your trial ends.