About Harry's Dyno
Harry's Dyno is a high precision performance measuring app. It utilizes GPS and OBD sensor input to recognize arbitrary speed ranges like 0-60 mph or 100-200 km/h. Both acceleration and deceleration testing is supported....
Harry's Dyno is a high precision performance measuring app. It utilizes GPS and OBD sensor input to recognize arbitrary speed ranges like 0-60 mph or 100-200 km/h. Both acceleration and deceleration testing is supported.
Results can be compared and analyzed in details. Using two-cursor mode, one can inspect subranges of data recorded (e.g. 80 to 120 km/h for a 0 to 200 km/h). Data is stored locally and can be filtered by speed range and vehicle used. It can be exported to various data formats too.
Provided the smartphone is mounted in a position with good GPS accuracy, the internal GPS can be used for measurements. For short speed ranges, high powered vehicles, and highest precision, either external GPS or OBD sensors can be connected. OBD adapters are actually preferable as speed changes are available instantly. We have an always up to date list of compatible accessories available here: www.gps-laptimer.de/compatibility/android
For distance based performance testing (quarter mile etc), please use Harry's LapTimer currently. This mode will be added to Harry's Dyno as a free upgrade shortly.
For Harry's LapTimer users! Harry's LapTimer GrandPrix has received a free feature upgrade and includes Harry's Dyno functionality now: please follow LapTimer ‣ Race ‣ Performance to use the dyno mode. In case you have used Harry's LapTimer Petrolhead so far, you may either upgrade it to GrandPrix (LapTimer ‣ Administration ‣ Add-ons), or go for Harry's Dyno as a separate app.
Enjoy and let us know what you think! For questions, tipps & tricks, and support, please use our forum www.gps-laptimer-forum.de
Previous Versions
Here you can find the changelog of Harry's Dyno since it was posted on our website on 2016-10-11 19:39:18.
The latest version is and it was updated on 2026-10-06 10:51:55. See below the changes in each version.
Harry's Dyno version
Updated At: 2026-06-28
Changes: User Interface
- added option to scroll buttons in case available buttons do not fit screen width
- fixed Load Track assistant
Sensor support
- added support for Haze GNSS
- added OBD support for Hybrid battery SoC plus tank gadget
- added heading support for NMEA sensors w/o RMC (like Columbus)
- fixed a scripting error in RaceboxMini sensor implementation
- made hundreds seconds handling for Racebox Mini more robust
- fixed a bug in CSV headers
Harry's Dyno version
Updated At: 2025-05-21
Changes: - fixed: crash when opening Lap Details and scrolling to bottom
Harry's Dyno version 25.0.1
Updated At: 2025-05-13
Changes: - reworked RaceBox Mini, Mini S, Micro integration
- support for Columbus P-70 RTK GNSS
- centimeter accuracy using NTRIP casters
- new translations Japanese, Spanish, Italian, French, Chinese
- completely reworked BT LE communication
- fixed screen flicker for tiled screens
- toolchain update latest Android version
- fixes for deep links, sensor configuration, NMEA parser, KPIndex, data history
- hundreds of smaller improvements and fixes
Harry's Dyno version 24.9.1
Updated At: 2024-07-01
Changes: - added an Expert Setting to adjust the number of minutes recent fixes are displayed in Map View
- fixed a crash in BT LE implementation
- fixed a crash in CSV export
- fixed a bug returning gear + 1 instead of gear
- added support for Vgate vLinker FD+/MC+/BM+ OBD adapters
- fixed and improved VBO import
- updated toolchain to use Java 17/22 and Android SDK 33
- updated deep links to Android's latest verified schema
Harry's Dyno version 24.8.1
Updated At: 2023-06-07
Changes: - fixed a problem with Bluetooth permissions (Android 12 and later)
- added support for Racebox Mini S
Harry's Dyno version 24.8.0
Updated At: 2023-04-27
Changes: - Added full SQL export of databases
- Tested support for vLinker FS OBD sensor
- Added support for Columbus P-9 Race GPS sensor
- Increased version for Racebox Mini integration
- Fixed a few bugs in low level data handling after stress tests
- Fixed a crash when importing .hlptrl files with tire information
Harry's Dyno version 24.7.0
Updated At: 2022-10-31
Changes: - Added Columbus P-7 Pro support
- Improved satellite ID mapping in NMEA parsing
- Updated Alsense TPMS sensors support to v3
- Add options to disable individual sensors
- Sort videos by date/time
- Updated various Android libraries
Harry's Dyno version 24.6.0
Updated At: 2022-04-20
Changes: - Updated several libraries used (app compatibility, Google Services)
- Startup sound muted during night (not in 9 to 9)
- Added support for RaceboxMini, OBDLink CX and Wiveltracker
- Increased SDK version to 30 (Android 11)
Harry's Dyno version 24.5.2
Updated At: 2021-09-02
Changes: Changes in v24.5.2:
- Minor bugfixes
Changes in v24.5:
- Ampersands in vehicle names made imports fail, improved escaping in XML exports
- Updated RaceHF Bean integration, added AirVent / racingIOTengine option with no GPS
Harry's Dyno version 24.5.0
Updated At: 2021-06-21
Changes: - Ampersands in vehicle names made imports fail, improved escaping in XML exports
- Updated RaceHF Bean integration, added AirVent / racingIOTengine option with no GPS
Disclaimer
Official Google Play Link
We do not host Harry's Dyno on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
The Google Play link for Harry's Dyno is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
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