Early Access — Limited Beta
Your physiology, decoded
You collect the data. Gradescale turns it into answers — individualized models that show where you stand, how you're changing, and what to do next. On your phone, in 3 seconds.
Cycling · Running · Swimming · Triathlon · Duathlon
Athletes are signing up for early access
Limited early access. Your position matters.
Free tier forever · No credit card · Your data stays yours
Connect Strava. See your first insight in under 60 seconds. No setup required.
Cycling Insight
Your 20-min power: 73rd percentile
Benchmarked against athletes in your age group
Running Insight
5K pace dropped 14s in 8 weeks
Your speed work is translating to race fitness
Training Insight
Readiness score: 82. Good to go
Based on load, sleep trend, and heart rate
Cycling Insight
W′ replenished 3× faster this month
Your anaerobic recovery is sharply improving
Swimming Insight
Stroke rate: 2% lower, same pace
You are getting more efficient in the water
Running Insight
Cardiac drift: 4.2%. Elite stability
Heart rate stayed flat over 90 minutes
Cycling Insight
mFTP estimate: 267W (+4W vs last month)
Modeled from your best 8 recent efforts
Swimming Insight
100m splits within 1.4s variance
Your pacing consistency is top-tier
Running Insight
Hill power: +9% vs flats. Climber DNA
Your gradient-adjusted pace tells the story
Cycling Insight
Zone 2 time: 68% of weekly volume
Polarized distribution, textbook execution
Running Insight
Weekly volume: 62 km. New 90-day high
Consistent buildup without acute spikes
Swimming Insight
SWOLF improved 3 pts since January
Fewer strokes per length at the same speed
Cycling Insight
Durability grade: B+. Power drops 8% after 90 min
Know how your body holds up over distance
Training Insight
Load balance: +14. Fresh for Saturday
Fitness up, fatigue absorbed. Peak window open
Running Insight
Aerobic efficiency: +12% over 90 days
Your endurance training is working
Peer-Reviewed Models
The same models used by World Tour coaches and sports scientists — now running on your phone
Athletes on the Waitlist
Growing every day
Direct Strava Integration
Syncs your entire history in minutes
You train. You track. You guess.
Strava tells you what you did. Gradescale tells you what it means — which sessions made you faster, which ones were junk volume, and whether tomorrow should be hard or easy.
Real analysis is stuck on desktop.
The tools that actually model your physiology cost $169 and require a laptop. You want answers on your phone, before the alarm goes off.
Your zones are not yours.
Most apps estimate your thresholds from age and weight. Gradescale derives them continuously from your actual power and pace data — because your body is not a population average.
Critical Power modeling
Your power-duration curve reveals what a single FTP number hides: where you're strong, where you crack, and how that's changing.
Readiness that thinks
Not a recovery score based on HRV alone. A composite model weighing load, monotony, sleep trends, and subjective feel — with a clear verdict.
Durability scoring
How much power you lose after 90 minutes matters more than your 5-minute max. We measure it.
Every sport, one model
Running CSS, swimming threshold, cycling CP — unified load tracking across everything you do.
Coming in Beta
Garmin Connect · Structured Workouts · Coach Sharing
Evidence-based models. In your browser. Free to start.
Individualized physiological modeling used to require desktop software and a coaching degree. Gradescale puts the same science in your browser and on your phone — with a free tier that never expires.
Browser & Mobile · Strava Sync · Free Tier Forever
See what your data has been trying to tell you.
Early access is opening soon. Secure your spot.