Now on the App Store for iPhone and Apple Watch
Understand your throw with Apple Watch. ThrowKit records the motion of every dart and shows you how repeatable your throwing motion really is.
Free · Requires Apple Watch
No tapping to count your darts. Your Apple Watch does the work.
Wear your Apple Watch on your throwing arm and tap Start.
Free throwing, a guided drill or a match: play as you always do. ThrowKit counts your darts on its own.
Finish the session and open your iPhone: your consistency, its five measures and every session, week by week.
A throw is over in a blink. ThrowKit measures every one and shows you how closely they repeat.
Every session gets a consistency score from 0 to 100. It tells you how repeatable your motion was – not how well you threw, and not where your darts landed. With ThrowKit Pro, the throw signature lays every throw of a session over the others.
Wrist speed, drive length, drive effort and follow-through make up the score; rhythm, the time between your darts, sits beside it. Each shows its value and how closely it repeated, with or without a wind-up. No measure has a right end: faster or longer is not better.
Beside the score — not part of it
(82 + 88 + 81 + 90) ÷ 4 ≈ 85
After a few sessions, ThrowKit knows your baseline on every measure, and trends show how your motion changes over the weeks. Baseline and trends are part of ThrowKit Pro.
After each session, Tonight names the measure that repeated least closely. With ThrowKit Pro you also get a drill to try – a suggestion, not a proven remedy – and a coach you can ask about your throw. With Apple Intelligence it writes its answers on your iPhone; without it, ThrowKit’s own rules answer the ready-made questions.
In your last session, drive effort repeated least closely: 81 out of 100, against your baseline of 84. Thirty at one target is the drill ThrowKit suggests for it. It is a suggestion, not a proven remedy: whether it changes your throwing, ThrowKit can’t say.
Your throw stays yours. Motion data and analysis stay on your Apple Watch and iPhone unless you export them or send them to ThrowKit yourself. With ThrowKit Pro, you can save your sessions to Apple Health as workouts. No account, no ads, no tracking.
Practice in the basement or at the club. Recording and analysis never need an internet connection.
Made with Core Motion, SwiftUI and Apple Intelligence. It feels right at home on your wrist and your iPhone.
An Apple Watch with watchOS 10 or later, paired with an iPhone on iOS 26 or later. Wear it on your throwing arm, left or right. The coach writes its own answers only on an iPhone with Apple Intelligence.
No. ThrowKit measures the motion of your arm, not the board. Your consistency score says how repeatable your throw was, not how well you threw or your average. In guided drills you tap Hit on your Watch yourself.
Yes. Around the Clock, Thirty at one target and the Hundred-dart set run right on your Watch: it shows the target, and you tap Hit when your dart is in. For a match, pick Match on your Watch and tap Leg over after each leg. Matches stay out of your practice numbers; comparing the two is part of ThrowKit Pro.
No. There is nothing to sign up for. Your data stays on your iPhone and Apple Watch unless you export it or send it to ThrowKit. ThrowKit Pro is bought with your Apple Account.
Recording is free: every session with its consistency and five measures, guided drills and match mode, for your last 30 days. ThrowKit Pro adds your baseline and trends, the measure details and the throw signature, Tonight’s plan, the coach, Apple Health workouts, heart rate, match insights and your whole history. Pro costs €4.99 a month, €29.99 a year with a 14-day free trial, or €59.99 once; other countries pay the App Store’s local price. Nothing is deleted without Pro – older sessions are only locked.
No. ThrowKit doesn’t connect to autoscoring systems. It measures your arm with your Apple Watch; in drills you tap your hits yourself.
ThrowKit is free on the App Store. Wear your Apple Watch on your throwing arm and throw as usual.
Free · Requires Apple Watch
