RallyMeter Calibrator 4+

Peter Lawrence

Designed for iPhone

    • $0.99

iPhone Screenshots


When participating in any form of classic car event, a key piece of information is distance travelled, which is then also used to calculate your speed in speed controlled events. To ensure the distance shown on your rally meter corresponds to the distance measured by the event organisers, you must first calibrate your rally meter.

The RallyMeter Calibrator allows you to enter the official measured mile distance, your measured mile recorded value, and current calibration value (where applicable), and gives you the correct calibration setting or adjustment for the event and your vehicle.

The app supports most popular brands of rally meter including:
Halda Tripmaster
Halda Twinmaster
Halda Speedpilot
Brantz International
Brantz Retrotrip

For Halda Tripmaster and Twinmaster users, you can select the X and Z gears you have available, and the app will give you the selection of gears that provide the closest calibration setting.

What’s New

Version 1.2.0

NEW: - For Halda Tripmaster and Twinmaster users, tap the recommended Z-Gear value to lock the Z-Gear to your current value and give you the nearest X-Gear to match the required calibration setting.

App Privacy

The developer, Peter Lawrence, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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