123Tune is an advanced ignition system developed by Albertronic B.V. specifically designed for classic cars. This free iPhone app allows users to wirelessly enter any advance-curve and vacuum-curve into the new "123TUNE+" range of products.

With the 123Tune app, users can easily adjust the ignition timing and other parameters of their classic car's ignition system. The app provides real-time data such as engine speed, generated advance, time, distributor temperature, battery voltage, spark energy, and vacuum/boost. If your iOS device is equipped with a GPS module, it can also display the car's speed.

The app features a user-friendly interface and allows users to manually adjust the advance by plus or minus 5 degrees in steps of a tenth of a degree. Although the adjustments made using the app are not stored in memory, they can be extremely helpful in finding the optimal advance-curve for your specific car.

123Tune is compatible with a wide range of classic car models from Alfa, Austin, BMW, Citroen, Ford-Kent, Fiat, Jaguar, Lancia, Mercedes, MG, Midget, Mini, Peugeot, Porsche, Renault, Triumph, Volvo, and Volkswagen. For more information on supported models, please visit the developer's website.