Harry's Dyno 25.0.0

Harry's Dyno is a high-precision performance measurement application designed for automotive testing. It leverages GPS and OBD sensor inputs to accurately identify arbitrary speed intervals, such as 0-60 mph or 100-200 km/h. The app supports both acceleration and deceleration testing procedures.

Test results are available for detailed comparison and analysis. Utilizing the two-cursor mode, users can examine specific subranges within recorded data— for example, analyzing speeds between 80 and 120 km/h within a broader 0 to 200 km/h dataset. All data is stored locally and can be filtered by speed range and vehicle type. Additionally, data can be exported in various formats for further analysis.

Accurate GPS measurements depend on the smartphone being mounted in a position with optimal signal reception. For enhanced accuracy, external GPS units or OBD adapters can be connected—particularly useful for short speed ranges, high-powered vehicles, or when maximum precision is required. OBD adapters are recommended due to their real-time speed data updates. An up-to-date list of compatible accessories is available here: www.gps-laptimer.de/compatibility/ios.

For distance-based performance testing—such as quarter-mile runs—Harry's LapTimer remains the preferred tool. Support for this mode will be integrated into Harry's Dyno as a free update in the near future.

Existing Harry's LapTimer users should note that Harry's LapTimer GrandPrix has received a free upgrade to include Dyno functionality. Access this feature via LapTimer ‣ Race ‣ Performance. Users of Harry's LapTimer Petrolhead have the option to upgrade to GrandPrix (via LapTimer ‣ Administration ‣ Add-ons) or purchase Harry's Dyno as a standalone application.

We welcome your feedback and inquiries. For support, tips, and community interaction, please visit our forum at www.gps-laptimer-forum.de.