Quick verdict
- What it is
- Store information collected; independent summary not yet available.
- At a glance
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- $19.99
- In-app purchases
Categories and search queries
Official categories
- Sports
- Navigation
AppCorpus categories
Key functions
| Function | Availability | Access | Scope | Evidence |
|---|---|---|---|---|
| In-app purchases | Yes | Limited free | — | Store published |
Screens
No screenshots collected yet.
Pricing & paywalls
App Store
- Price: $19.99
- In-app purchases
Ratings & reviews
App Store
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5/5Incredible application, even better customer service
Been a user for few years and it’s quite honestly one of the best lap timer solutions (and not just among mobile apps). Other professional setups will cost you over $1000 when you factor in hardware but this app will fine on its own give you nearly same level of data acquisition. Best of all is Harry’s dedication to the community. He personally responds to all troubleshooting requests despite the majority of questions being repeat asks already covered in his FAQ and provides regular feature updates to the software. Anyone complaining about user difficulty didn’t spend the 5 mins to read the user guide.
dji203 · 31 Jul 2026
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5/5You can’t beat it
I’ve been tracking Porsche’s for years. I’ve had $1000 systems such as Traqmate but that’s no longer sold and windows only support is tough. Porsche Track Precision app is terrible but HLT is super reliable. I use an external BT GPS and a BLE ODB adapter. Overall you just can’t beat HLT for cost to realizability to being able to dig into data. My only wish is if I could find 991.2 GT3 custom PID info for brake pressure and ESC like the Porsche track precision app. Thank you Harry for continuing to improve an already amazing app. PS I use the Grand Prix in app upgrade, worth every penny.
reviews13504 · 31 Jul 2026
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2/5Too buggy and unreliable for video
I bought this many years ago and used to work great. but over the years Harry has added so many features that the app has become extremely unreliable. He really needs to restart and build an app that is much simpler and easy to use, and reliable. The biggest problem I have right now is that when I record a video, it is extremely difficult to extract the video including overlay data onto my iPhone. I have to first narrow things down to a specific lap, and then when I try to export that to my iPhone it fails 9/10 times. Even when it succeeds, it takes 5-10 minutes to export each lap video. Far too painful.
Jg125556 · 31 Jul 2026
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5/5Unbelievably great
I’m completely blown away by the features and functionality of this app, and the documented support. There are so many things you can do with it, an incredible array of supported accessory devices, and with all the complexity available there is documentation and online support that makes it easy to work with. Best value it track software out there.
Austin Johnny · 31 Jul 2026
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1/5Barely Functional App
I can overlook Bluetooth connectivity issues for the data and overlay, although I purchased and use recommended gps and OBD2 devices. Those are spotty at best. The app does fine of data logging and the video looks good. But when you overly and export a video the app basically won’t do anymore video viewing or exporting. Then in the photos app you can’t view the video that was exported (or any other video in your library) until you reboot the phone. The app did this with my iPhone 15 Pro and now the same with my brand new 16 Pro. I’ve deleted the app and moved on. Payed a bit more for the Garmin Catalyst but it’s much better. Harry’s lap timer is nothing but headaches.
srtrevino83 · 31 Jul 2026
Privacy & accessibility
App Store
Privacy
- Data Linked to You — App Functionality — Contact Info — Name Developer declared
- Data Linked to You — App Functionality — Contact Info — Physical Address Developer declared
- Data Linked to You — App Functionality — Identifiers — User ID Developer declared
- Data Linked to You — App Functionality — Location — Precise Location Developer declared
- Data Linked to You — App Functionality — User Content — Other User Content Developer declared
- Data Linked to You — Contact Info Developer declared
- Data Linked to You — Identifiers Developer declared
- Data Linked to You — Location Developer declared
- Data Linked to You — User Content Developer declared
Accessibility
No accessibility labels collected yet.
Versions
App Store
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22.1.2
This is a bugfix release: - Improved reliability of lap split detection
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22.1.3
Changes: - fixed manual recording operations including Video Preview and incomplete laps - fixed an issue with custom PID expressions
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22.1.4
Changes in v22.1.4 - Improved sync point maintenance for multi lap overlays - Expanded usable parameter range to A .. AZ for custom PIDs - Fixed an issue with ECU addressing - Improved Sensor Information display for OBD adapters - Improved message showing import results
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23.0.0
Changes in LapTimer v23: Video / Overlay - Added tire gadget to video overlays; support for both measured and simulated temperatures [GrandPrix] New Functionality - Editing of recordings at fix level - Laps can be marked as Incomplete manually - Recordings can be joined into one lap - Replaced Dropbox integration by general purpose sharing of data (iOS distribute function) - Added weather information - Added reference lap plot to Map View - New Tires View showing temperatures, pressures, battery, tx level, with intelligent warnings [GrandPrix] - Customizable fuel tank empty and warning levels - Tire temperature simulation from acceleration and vehicle properties Improvements - Various new Expert Settings to tweak LapTimer for your requirements - Improved Chart coloring; added more temperatures to Temperature Chart, added new chart showing tire temperatures [GrandPrix] - Sensor List is showing accessory types disabled - Avg. speed calculation shows calculation source (standard or measured distance) - Trigger detection corridor width can be specified by trigger - More information on databases, improved recovery routines - Modernized build environments to iOS12 - Improved sensor fusion, made it more robust for dropping connections Sensors - Added support for indoor positioning systems (e.g. indoor karts) - Added support for TPMS sensors: VC601 and RejsaRubberTrack (more to come) - General support for tire sensors with up to 16 temperatures per tire - Included tire configuration (assign sensor or tire) - Generalized engine sensor support to fully support non OBD systems - Added support for VEEPEAK OBD BTLE adapters - Added 50 Hz storage rate (experimental) Plus dozens of smaller fixes, improvements, and refactoring
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23.0.1
- Improved same session detection - Use recording date for "File created..." in VBO exports - Added a message to Video Preview that this should not be used while driving - Added a workaround for iPhone apps running on an iPad in compatibility mode - Updated RaceHF sensor script
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23.0.10
- 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 - Refactored VBOX, ASL, BadElf configurators to use the new sensor configuration feature - Code sanitizing and modernization
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23.0.11
- 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 - Fixed a crash when loading an Add-on from Add-ons while on an iPad in landscape
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23.0.3
- Added a backup reminder in case the latest backup is older than the last recording - Disabled pausing and snap to road for iOS location service - Some performance tuning on session grouping - Fixed rotation issue reported for Lap List on iPad; fixed Add-ons and Lap List views - Removed a bunch of now unused alerts - Fixed switching temperature gauge and gadget in Engine View
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23.0.5
Changes in 23.0.4 - Optimized tracing - Added both the current track for manual recordings, and the list of automatic track sets available to Status - Clarified meaning of current track Changes in 23.0.5 - Added support for Nonda ZUS TPMS - Added support for signed distances (TPMS sensors) - Tires View memorizes range selection - Fixed bug in tire fix storage - Tire pressure changes from temperature development are taken into account for warnings - Changed GPS View to show satellite number and differential status for non-NMEA sensors if available
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23.0.6
Changes in v23.0.6 - Updated Compatibility List: VC601, RejsaRubberTrack, Texys, Pozyx, Nonda TPMS, APEXpro - Allows third parties to add TPMS sensor integrations - Added support for APEXpro sensor - Added satellites number to GPS View for non-NMEA sensors with sat num available - Made Dyno minimal speed (30 km/h) configurable in Expert Settings - Added a Re-Link button to the error dialog shown for OFFLINE videos - Improved Kiwi4 stability by adding a workaround for default protocol pre-selection (ATSPA) - Refactoring / Modernization of several code areas
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23.0.7
This bugfix release is bringing back fluent real time videos! We discovered an issue for both real time video overlays and the use of Video Preview while racing lately. This problem is fixed now. You will see lag-free overlays for video with up to 120fps. :-)
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23.0.8
- Full support for iOS13 Dark Mode - Made custom PID settings more robust - Fixed exporting overlaid videos (truncated min/max speeds, POI labels, and missing lap / sector times) - Updated RaceHF sensor script - Fine tuned iPhone 11 screen layouts - Fixed zoomed ticks size in Timer View (most models) - Fixed selection of search categories (Kart etc) - Updated list of iOS devices - Several optimizations for iOS13 - Flipped sign for lateral acceleration in VBO imports and exports - Fixed a bug in Add-on section counts - Added a workaround for missing file associations - Fixed battery level retrieval for BT LE sensors - Fixed video resolution selection range for iPads
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24.0
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 media handling and access to videos in particular - Modernized various user interface areas for late iOS versions - Renamed Camera Roll to Photos - 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 - Allow manual track selection in Status if either Manual Timing is enabled or Performance View is selected - Fast speed range selection for Performance View - Fixed delta display of temperatures when using Fahrenheit - Fixed a crash when returning from Video Preview - Added sector and lap time display to video overlays again - Added setting for HERO8 - Added support for the airVentDisplay (BMW e46 m3 GNSS and engine adapter) - Added track subtype for Water (for Jetski, motorboat, sailing competition) - Fixed crash when restoring a database - Updated traditional Chinese translation - Added build number to system information - Massive refactoring in several areas
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24.5
- added support for multi-lens cams, new selection x0.5, x1.0, x2.0, x2.5 in Video Preview - added a feature to auto-shift recordings to tracks (minimize overall gap) - updated RaceHF Bean integration - added AirVent / racingIOTengine option with no GPS - several improvements and fixes for iPads (crashes, layout, data transfers) - ampersands in vehicle names made imports fail, improved escaping in XML exports - removed export of invalid intermediate times - in case storage reported by iOS is too small for overlays, user gets an option to ignore and proceed - updated iPhone/iPad name mappings in Contact mail
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24.6
- 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 - Fixed switches between Fill and Fit screen layouts for videos in landscape - Startup sound muted during night (not in 9 to 9) - 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) - Added experimental support for Alsense TPMS sensors We had a hard time to fix the media library corruption that occurred when overlaying videos. This problem has been reported since iOS15. In case you use iOS15, make sure it is updated to 15.4.1 or higher and use this app version. In case you run into issues, please contact us.
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24.6.1
- Fixed a problem in Racebox Mini integration resulting in 1Hz instead of 25Hz recordings - Fixed a few bugs in Alsense TPMS scripting - Updated iOS device list to latest release - Set Playback audio mode allowing video playbacks while muted - Fixed OBD field indentation in hlptrl exports
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24.6.3
- Fixed 25 Hz storage rate for Racebox Mini - Added support for the Columbus P-7 Pro GNSS
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24.7
- 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
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24.7.1
- Fixed crashes in System, Contact, Export
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24.8.0
- 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 - Worked around a crash when overlaying video with tire information - Fixed a crash when importing .hlptrl files with tire information
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24.8.2
- Added support for Racebox Mini S - Added an Expert Setting to adjust the number of minutes recent fixes are displayed in Map View
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24.9.0
- 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
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25.0.0
- new: support for Apple CarPlay added - 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
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25.0.1
- redesigned CarPlay startup - fixed a bug crashing LapTimer when started with CarPlay connected - some minor interface changes and fixes - switched to Inches for very precise accuracy displays
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25.1.0
· 25 Jun 2026
User Interface - fixed dragging POIs in Map - added option to scroll buttons in case available buttons do not fit screen width - fixed misplaced sector indicator in Timer View CarPlay - fixed crash when app is started from CarPlay - fixed negative height display in CarPlay 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
Alternatives
- Lap Legend - Lap Timing & Data — Same category + similar ratings
- RaceChrono Pro — Same category + similar ratings
Availability by market
- US
Data quality & evidence
- Page completeness
- Live store listing
- Last verified
- 31 Jul 2026
- Sources
- App Store
- Independent summary has not been published yet.
- Screenshots: not yet collected