Features
Everything Kresta reads,
tracks, and coaches.
Kresta fits the Skiba critical-power model to every ride and run, catches the moment you beat it, and hands the numbers to an AI coach that knows your whole history. Here is what ships today, and what is honestly still in the build. No FTP tests, no guesswork.
The signature
Three numbers, fitted from how you actually ride and run.
Kresta does not ask you to take a test. It reads your history and fits your power-duration curve down to three numbers that define you, then tracks them second by second as you train.
Sustainable power. The pace you can hold for the long haul. The floor everything else is built on.
Burst energy. The tank above sustainable power. How much hard work you have before it runs dry.
Top sprint. Your peak neuromuscular power. The number a flat-out sprint can reach.
Every signature carries a plain read on how confident the fit is, based on how much you have ridden and the breakthroughs it has actually seen. No invented certainty.
Breakthrough detection
The model notices when you beat what it predicted.
When a real effort outruns the power your curve expected, that is a breakthrough. Kresta catches it second by second, marks it on your history, and updates your numbers on their own. No number to bump by hand, no test day.
The coach
A coach that has read your whole history, and acts.
Most apps forget you between sessions. Kresta’s coach carries your full power history, your form today, and your goal. Ask in plain language and it proposes the change, schedules the workout on your calendar, and adjusts the plan around how you actually train. It proposes, you confirm, and every change can be undone. Powered by Claude.
Cycling and running
One athlete, both sports, one signature each.
Kresta keeps a separate critical-power signature for the bike and for the run, so your training reads honestly in each. Cycling in watts, running in pace, no test efforts either way.
The plan
A plan that lives on your calendar.
Periodized training 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. The week ahead, always in view.
On the way
Honestly, still in the build.
These are next. Some are coming soon, one waits on a wellness source you connect. None of them show a number until the number is real.
VO2max
An estimate of your engine, per sport
A per-sport VO2max estimate read from your signature and body weight, always labelled as an estimate with its method shown plainly.
Readiness
How ready you are to train today
Sleep, resting heart rate, and heart-rate variability read as one daily signal, once a wellness source is connected.
Durability
How your signature holds deep into a session
Whether your sustainable power stays honest after hours of work, or fades late in a long effort.
Races
A read on the day that matters
Point Kresta at a goal event and see how your form is tracking toward it.
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.
See your signature for yourself.
Free while Kresta is in development. Bring your Strava history and read your training properly.