You already collect the data. Clearform turns it into answers: how ready you are right now, what the next two weeks ask of you, and proof your fitness is building. Plain language, on your phone, in under ten seconds. No new platform, no new account.
Requires a free intervals.icu account.
intervals.icu is one of the best training analytics platforms there is: deep, precise, endlessly configurable. But depth takes time, and most mornings you just want the answer. Clearform connects through the official API and turns your own data into exactly that: how recovered you are, whether today should be hard or easy, and whether all that training is actually working. Ten seconds, one glance, on with your day.
Your intervals.icu account stays the single source of truth. Clearform reads it live: nothing to migrate, nothing to keep in sync, nothing to maintain twice.
The deep dives and power tools stay where they belong, in intervals.icu. Clearform is the layer on top that tells you what it all means, before you have finished your coffee.
We build Clearform because we train with intervals.icu ourselves and love it. Independent, unaffiliated, and made with a lot of care.
Open the app and get a straight answer: push today, or take it easy. Your Form, HRV, resting heart rate and sleep are checked against your own normal range, so a quiet "in range" means you are genuinely fine. No red arrows shouting that you are broken, no mystery score to decode, just a clear call you can trust, with the numbers right there whenever you want proof.
Every session is a dash, colored by sport: solid is banked, faded is still to come, race days glow. One look tells you where you stand and what is waiting, no calendar digging. Go ahead, swipe the weeks below.
Your fitness climbing while fatigue settles after the big weeks: that is proof the hard sessions are landing. Zoom out to six months and see how far you have come, with a plain-language caption under the chart so you never have to unscramble it before breakfast.
Tomorrow's session at a glance: the warmup, the work sets, the recoveries, every block colored by how hard it will bite and sized by how long it lasts. You walk in knowing exactly what is coming, so you can get your head right and give it everything. Once it is done, the same card shows how it actually went: your stats, and your time in every zone.
Tuesday's tempo moved to Thursday in two taps. Caught a cold, tweaked a knee, off on holiday? Mark it right in the app. Everything syncs straight back to your intervals.icu calendar, and tomorrow's guidance takes it into account instead of guilt-tripping you.
Your next race sits at the top of the app with a live countdown, and Clearform projects your Form forward, day by day, through the taper. No more hoping the plan works: watch yourself getting fresher as the start line comes at you.
Clearform runs sealed inside your own browser. Your personal API key is stored on your device and nowhere else, and every request travels straight from your phone to intervals.icu over an encrypted connection. No Clearform server ever sees your training data, because there is no Clearform server. Forget the key whenever you like: we do not store it, we cannot read it, and we could not use it if we tried.
No middleman. Nothing sits between the two: no Clearform server reads, stores or even sees your training data. This page you are reading right now is the only thing we host.
Clearform builds on it, so you need one. The free tier is plenty, and if you train with Garmin, Coros, Polar, Suunto, Wahoo, Zwift, Rouvy or Runna, your data is probably already flowing in.
In intervals.icu: Settings > Developer > API key. A couple of taps, no forms, not another password to remember. That key is your login, and it never leaves your phone.
Open app.clearform.icu, paste your key, add Clearform to your home screen. From then on it opens signed in: one tap from lock screen to answer.