For iPhone and Apple Watch. Launching soon.
Run faster. Ride further. Know why.
Pelt records every run and ride, grades the session, then tells you what to do next.
One email when Pelt launches. No spam.


A grade for every session.
Finish a run or ride and Pelt grades it against your intended session using heart rate, pace, cadence and recent training.
One grade, five reasons
One score out of 100, then separate grades for intensity, pacing, aerobic effect, running form and load.
See where the time went
Minutes in each heart rate zone, so you can see whether an easy run stayed easy and a hard one was hard.

Every kilometre at a glance
Bars above the dashed average line were faster. On interval sessions, each rep stands out on its own.
Recovery and what's next
See training effect on the standard 0 to 5 scale, hours until you're ready to go hard again, and what to do next.
Wrist and phone, in step.
Start on either. Apple Watch reads heart rate, iPhone tracks the route, and both show the same numbers every second.
- Heart rate from your wristApple Watch streams heart rate to your phone while you run.
- Effort you can seeThe current zone lights up on both screens.
- One clockPause on either and both pause.
Recorded in Pelt, replaying a real threshold run.
Knows when to push, and when to rest.
Pelt tracks fitness and fatigue from every session, then makes one clear call for today. Some days, that call is rest.
- ReadinessBased on your recent load, sleep, resting heart rate and HRV.
- Fitness and formLong-term fitness versus short-term fatigue, updated after every session.
- Load ratioWarns you before weekly load rises too far above what you're used to.
- Weekly reviewGrades your weekly balance and names the one thing to change.

Everything else, done properly.
The numbers you check every day, laid out for a quick read after a hard session.



One tap to start. Phone or wrist.
Start on iPhone or Apple Watch. The watch streams heart rate and pace to your phone while you move.
- Routes that loop homePick a distance and get loops on real paths that finish where you started.
- Live locationShare a link so someone at home can follow along.
- Audio cuesPace and heart rate every kilometre, without looking down.
- Auto-pauseStops the clock at the lights, starts it again when you go.

Your training stays yours.
Pelt works without us. Your data lives on your phone, and anything that leaves it is encrypted first.
On your phone first
Activities, routes, photos and health data stay on your iPhone. You can use Pelt without creating an account.
Encrypted before upload
Backups are end-to-end encrypted on your phone using a key stored in Keychain. We store the backup but cannot read it.
No ads. Nothing sold.
We don't sell your data or show ads. This website uses no cookies, analytics or trackers.
Free at launch. All of it.
Every Pelt feature is free at launch, including full session reports and the training plan. No trial, card details or ads.
- Record runs, rides and more than 40 other sports
- Apple Watch and Apple Health
- A graded report after every session, with the science behind each grade
- Effort Twin forecasts and pacing plans
- Coach, readiness and an adaptive training plan
- Routes that loop home, with terrain and surface filters
- Physique analysis and a physical development plan
- End-to-end encrypted backup
Pelt it.
Be first to try Pelt when it lands on the App Store.

