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Clutch: Lap Timer & Pace Notes for iPhone

Contact us

Email oceanzhou913@outlook.com

Please include: your iPhone model and iOS version, what you were doing, and — if the problem involves a run — which screen you were on when it happened. We usually reply within a few days.

Getting started

  1. Add a track. Open Tracks and either record the route by driving it once, or tap the import button to bring in a .kml or .gpx file.
  2. Check the corners. The track page lists every corner with its direction and severity, on the map and in a list. Rehearse the whole route before you drive.
  3. Calibrate once (optional). For corner G readings, go to Tools → G meter, park level and zero it. The calibration is shared across the app.
  4. Drive. Open Drive, pick the track and arm at the start gate. Timing starts on a measured gate crossing, not on a button.
  5. Review. After the run, the summary shows laps and corner speeds. Review opens the full breakdown, speed chart, G chart and replay.

Frequently asked questions

Can I use Clutch without a track?

Yes. Free Roam works anywhere, with no track at all, and it is free forever with no limit — it is never counted and never gated. You get live timing, speed, distance and a G reading.

How do I import a route?

There are three ways, all on the Tracks page:

Importing always adds a track; it never overwrites or replaces anything you already have.

No route handy yet? Download a sample closed loop and import it, to see how the corner list and the voice notes behave before you drive your own road: sample-route.kml · sample-route.txt (plain latitude,longitude text you can paste).

What is free, and what does the one-time purchase unlock?

Free forever: Free Roam timing, drawing tracks, KML / GPX import, corner analysis and route preview, playing a callout and rehearsing a route, and the G meter / altitude / sound-level instruments.

Free with a limit: 5 timed runs on a saved track, 3 acceleration or braking tests, and review of your most recent run.

Pro (one-time purchase, no subscription): unlimited timed runs with voice pace notes, unlimited tests, full run history, data export, share cards, per-corner G recording and wet / dry comparison.

A free run is only counted once it has actually finished and at least three pace notes were announced during it. Opening a run and closing it again costs you nothing.

How do I restore a purchase? (new phone, or reinstalled)

Open Settings in the app and tap Restore purchase — the button is always there. The same button also appears on the Clutch Pro screen. Make sure you are signed in with the same Apple Account you bought it with. If Family Sharing is on, a family member's purchase can unlock it too.

Why does Clutch need my location? Is it sent anywhere?

Location is the measuring instrument: it is how the app records a route, knows where you are on a saved route, and times a real gate crossing. Nothing is transmitted — your location never leaves your phone. "While Using" is enough for every feature. The optional "Always" upgrade only lets timing and voice notes keep running when the screen is locked during a drive.

Do the voice notes work offline?

Yes. Clutch has no server and works with no mobile signal at all — routes, notes, timing and review are all local. Maps need a network connection the first time you view an area (map tiles come from Apple Maps), but recording and timing do not.

Does Clutch tell me what speed to take a corner at?

No — and that is deliberate. Clutch describes the road: corner direction, severity and distance ahead. It does not suggest, display or announce a recommended, target or "safe" speed, and it does not encourage speeding. Any speed number you see in the app comes from your own recorded run and is shown only after the run, for analysis. Please drive responsibly and obey traffic laws.

Where is my data stored? Can I get it out?

On your device only. There is no account, no cloud and no analytics. Deleting the app removes everything. With Pro you can export your run data as a file you own; runs can also be turned into a share card image.

How do I get a refund?

Purchases are handled by Apple, so refunds go through Apple as well. Visit reportaproblem.apple.com, sign in and select the purchase. We cannot issue refunds ourselves.

Does Clutch work with CarPlay, or on Android?

No. Clutch is an iPhone app (iOS 17 or later) and does not support CarPlay.

Troubleshooting

The Clutch Pro price does not appear on the purchase screen

The app gets the price from the App Store. If the store cannot be reached — no network, or an App Store outage — the screen says so and offers a Try again button instead of showing a broken purchase button. Check your connection and tap it again.

Timing paused when I locked the screen

That happens if location permission is set to "While Using" only. To keep timing and voice notes running with the screen locked, allow "Always" in iOS Settings → Privacy & Security → Location Services → Clutch.

No voice notes during a run

Check, in order: that you selected a track (Free Roam has no corners to call), that the phone's volume is up and it is not in silent mode, and that the run has actually started on the start gate. You can test the voice indoors with Tools → play one callout or rehearse the whole route, and run Tools → self-check to confirm the audio pack is intact.

Driving responsibly. Clutch is a timing and note-taking tool for track days, closed roads and private property. It never suggests a speed. Always obey traffic laws and local regulations.