Train smarter,
suffer less.
AI-optimized coaching in your pocket. Kresta fits the Skiba critical-power model to every ride and run and pairs your numbers with a coach that knows your whole history. No test efforts, no guesswork.
The cockpit
Everything that matters, on one calm screen.
Your signature, your form today, the next workout, and the week ahead. The depth is all there, revealed only as you reach for it.
The coach
A coach that has read every ride you have done.
Most apps forget you between sessions. Kresta’s coach carries your full history, your form today, and your goal, then plans, adapts, and explains in plain language. It proposes, you confirm, and every change can be undone. Powered by Claude.
The plan
A plan that lives on your calendar.
Periodized training blocks rendered as a calendar you can drag, that rebalances around how you actually train, with as little or as much detail on screen as you want.
How Kresta works
From raw ride to real decision.
Connect
Bring your rides and runs from Strava, or upload a file. Kresta reads every second of power, pace, and heart rate.
Analyze
The model fits your power-duration curve, tracks it second by second, and updates the instant you beat what it expected.
Coach
Ask in plain language. The coach reads your numbers, adjusts the plan, and puts the workout on your calendar. Every change can be undone.
Connect
Bring your rides and runs from Strava, or upload a file. Kresta reads every second of power, pace, and heart rate.
Analyze
The model fits your power-duration curve, tracks it second by second, and updates the instant you beat what it expected.
Coach
Ask in plain language. The coach reads your numbers, adjusts the plan, and puts the workout on your calendar. Every change can be undone.
Your signature
Three numbers, fitted from how you actually ride.
The pace you can hold for the long haul. The floor everything else is built on.
The tank above sustainable power. How much hard work you have before it runs dry.
Your peak neuromuscular power. The number a flat-out sprint can reach.
What is inside
The tools that used to need a lab.
What is shipping today, and what is honestly still in the build. No invented numbers.
Cycling and running
One athlete, both sports.
From an easy 5K to the long stuff.
Sustainable pace, burst distance, and top speed, fitted from your runs. Threshold pace and zones without a single test effort.
Sustainable power, burst energy, durability.
The full critical-power signature on the bike, tracked second by second, with breakthroughs caught the moment you beat the model.
Kresta tracks Maximal Power Available second by second using the three-parameter critical-power model published in the Journal of Science and Cycling. When you outperform the model, that is a breakthrough, and your numbers update themselves. Real sports science, in plain language.
The point of all of it
Train on what your body is actually doing.
Start reading your training properly.
Free while Kresta is in development. Bring your Strava history and see your signature.