We're Data Nerds Who Love to Sweat
We believe every heartbeat tells a story, every stride has meaning, and every workout deserves scientific analysis.
Our Obsession
- We measure everything because numbers don't lie
- We've analyzed our own workouts for 10+ years
- We built this because existing apps weren't nerdy enough
Built by Athletes
Every algorithm tested on real workouts, every metric validated through our own training.
Science First
No magic algorithms. Just peer-reviewed research, proven methodologies, and transparent calculations.
Our Mission
- Put professional sports science in everyone's pocket
- Make data accessible without compromising privacy
- Help you understand your body through numbers
Our Promise
- No marketing BS - just pure data
- Open formats - your data is always yours
- Continuous improvement based on latest research
Your Data, Your Rules
We can't access your data because we designed it that way. Privacy by architecture, not by policy.
The Numbers Don't Lie
Research Papers
Every calculation backed by peer-reviewed science
Years of Data
Built from analyzing our own training evolution
Server Calls
100% local processing, zero cloud dependency
Why We Built This
We tried every analytics platform out there. They were either too simple (just basic stats) or too opaque (magic AI scores with no explanation). And every single one wanted to upload our training data to their servers.
As data nerds, we wanted the formulas. As athletes, we wanted actionable insights. As privacy advocates, we wanted local-only processing.
So we built what we couldn't find: Apps that show the science, explain the calculations, and respect your privacy.
If you're the kind of person who wants to know why your VO₂max is 52, how TSS is calculated, and where the training zone formulas come from—welcome home.
Ready to Dive Deep?
Choose your sport and start analyzing with the transparency and rigor you deserve.
Explore Our Apps