Harry's Dyno25.1.0 - App Store

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/ios

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

Version History User Interface
- added option to scroll buttons in case available buttons do not fit screen width

Sensor support
- added support for Haze GNSS sensors
- added OBD support for Hybrid battery SoC plus tank gadget allowing to toggle between tank and battery level
- 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 25.1.0 Jun 24 - reimplemented support for RaceBox Mini, Mini S and added RaceBox Micro
- added support for RTK GNSS sensors
- added support for Columbus P-70 Ultra sensor
- change accuracy precision to centimeters / inches
- added support for NetRTK / NTRIP casters
- completely new and full localizations for Japanese, Chinese (traditional, simplified), Spanisch, French, Italian
- made NMEA parser more resilient to changing sentence pattern
- updated list of iPad/iPhone models (M4 iPad, iPhone 16)
- fixed a bug in day / night weather icons
- fixed a problem that positioned forward / backward buttons wrongly in Lap Details
- fixed order of parameters in Sensor Configuration dialogs
- improved BTLE write operations
- improved NMEA sentence displays
- dozens of minor fixes, improvements, features 25.0.0 05/06/2025 - reworked routines checking available storage
- use expert setting "Low Memory" to remove all storage checkings 24.9.1 06/30/2024 - fixed a bug in gear calculation
- replaced deprecated acceleration framework
- added support for Vgate vLinker FD+/MC+/BM+ OBD adapters
- fixed and improved VBO import
- rechecked Racebox integration to deliver high update rates 24.9.0 05/05/2024 - Added support for Racebox Mini S
- Added an Expert Setting to adjust the number of minutes recent fixes are displayed in Map View 24.8.2 06/29/2023 - Added full SQL export of databases
- Add support for vLinker FS OBD sensor
- Added support for Columbus P-9 Race GPS sensor
- Increased version for Racebox Mini integration
- Rechecked memory testing, added an Expert Setting to mute warnings
- Fixed a few bugs in low level data handling after stress tests
- Refactored iOS version specific code
- Fixed a crash when importing .hlptrl files with tire information 24.8.0 05/30/2023 - Fixed crashes in System, Contact, Export 24.7.1 11/18/2022 - Updated Alsense TPMS sensors support to v3
- Added option to enable / disable individual sensors
- Video List gets sorted by date / time
- Added support for iPhone14 screen resolutions and completed iPhone type list
- Increased minimum supported iOS version to iOS12 24.7 10/24/2022 - Fixed 25 Hz storage rate for Racebox Mini
- Added support for the Columbus P-7 Pro GNSS 24.6.3 07/26/2022 - Fixed a problem in Racebox Mini integration resulting in 1Hz instead of 25Hz recordings
- Updated iOS device list to latest release
- Set Playback audio mode allowing video playbacks while muted
- Fixed OBD field indentation in hlptrl exports 24.6.1 06/26/2022 - Fixed import of log files - the last and second last lap imported has been purged accidentally
- Fixed a crash that occurred when tapping image preview to show a bigger version
- Added support for RaceboxMini GPS sensor
- Added support for OBDLink CX OBD sensor
- Added support for Wiveltracker GPS/OBD sensor
- Fixed overrun in power calculation (seen in power chart) 24.6 04/19/2022 - Fixed a crash that occurred when tapping image preview to show a bigger version
- Made check for OBDLink CX more flexible
- Fixed addition of Simulated sensors taking precedence in Dyno 24.5.3 10/22/2021 - added a feature to auto-shift recordings to tracks (minimize overall gap)
- updated RaceHF Bean integration
- added AirVent / racingIOTengine option with no GPS
- ampersands in vehicle names made imports fail, improved escaping in XML exports
- removed export of invalid intermediate times
- updated iPhone/iPad name mappings in Contact mail 24.5 09/13/2021 This is our next major release. It is free for all existing users!
- Reworked all logging format importers (VBO, GPX, NMEA), added support for as-is imports (VBO, NMEA)
- Refactor all dialogs, fixed dead locks
- Fixed VEEPEAK OBD adapter recognition
- Fixed a bug in track set conflict resolving
- Modernized launch screen for late iOS versions
- Modernized various user interface areas for late iOS versions
- Changed OBD gauges in video overlays to appear if any lap has OBD, not only if all have it
- Added a health check for disconnected external sensors
- Fast speed range selection for Performance View
- Fixed delta display of temperatures when using Fahrenheit
- Added support for the airVentDisplay (BMW e46 m3 GNSS and engine adapter)
- Fixed crash when restoring a database
- Updated traditional Chinese translation
- Added build number to system information
- Massive refactoring in several areas 24.0 09/21/2020 - Maintenance release addressing some intermittent issues
- Reworked document type declarations again, should work around issued with iOS13 and file opening
- Improved error message when import fails
- Fixed a crash that could occur on external sensor disconnects
- Fixed crash when opening files using iOS13.2 23.0.11 09/19/2020 - Optimized Light / Dark skinning for web and help views
- Optimized sizing of iPad user interface, font sizes and gadget heights in particular
- Improved Bluetooth handling for iOS 13: LapTimer can be operated with BT disabled again
- Fixed Video Preview landscape orientation when starting it from a portrait view (Classic, Speedo, Racer's)
- Removed OBD24U sensor support
- Fixed a bug in reading NMEA from external GPS accessorties
- Improved NMEA handling to handle GPS, GLONASS, Galileo, BeiDou sentences better
- Enriched NMEA sentence display in Satellites View and Sensor Information to report on GNSSes used
- Fixed problem with missed satellites in Satellites View
- Added support for sensor configuration dialogs using scripting
- Code sanitizing and modernization 23.0.10 10/30/2019 We have updated Dyno to use our latest LapTimer platform version.
Too many changes to list here, but you will enjoy

- tons of new sensors supported
- full iOS13 renovation
- Dark mode
- many features added to LapTimer between v21 and v23

Thanks for your support! 23.0.8 10/02/2019 Changed in v21.2

‣ Added full support for native resolutions (iPhones X, 8, 8 Plus)
‣ Raised minimal iOS version to 9.3
‣ Added tool bar for all list views
‣ Multiple changes to sensor framework, added Expert Settings
‣ Added support for TONWON BTLE OBD sensor
‣ Added a work around for Alfa Romeo Giulia QV OBD replies
‣ Simplified sensor delay scheme
‣ Memory and performance optimizations

We have massive changes to the user interface in this version.
In case you observe misalignments or see something that needs to be trimmed,
please drop us a note! 21.2.0 11/26/2017 ‣ Revisited VBOX Sport integration, improved configuration handling
‣ Refined all messages asking for additional vehicle definitions: missing channels are listed
‣ Made trigger detection more reliable for limited GPS accuracy
‣ Added an Expert Setting to allow lap detection in situations with bad direction accuracy 21.0.11 09/08/2017 ‣ Fixed direction calculation for RaceCapture
‣ Minor changes / tweaks 21.0.7 07/18/2017 Changes in v21.0.5:

‣ Some minor bug fixes 21.0.5 04/27/2017 Some minor bug fixes and improved compatibility for iOS 7 to 9. 21.0.2 04/17/2017 Dyno v21 is a major release with tons of changes. It is free for all existing users!

New features:
‣ Improved VBO export
‣ Added vehicle repository and completion functions (crowd sourced)
‣ Added Plain/Standard/Expert display levels
‣ Completely revised client / server communication
‣ Added network traffic monitoring and reporting
‣ Reworked map annotations for all map displays
‣ Migrated Dropbox interface to v2

New sensor support including:
‣ Bad Elf Lightning, Pro, Pro+, Surveyor 21.0.0 04/14/2017 ‣ Removed manual start / split buttons from Performance View
‣ Improve version display for update messages
‣ Fixed a crash during Dropbox export for Chinese language settings 20.1.4 10/10/2016 Minor changes and stability improvements 20.1.1 09/29/2016