3.1.28 – 6 March 2026

Features

• Session Data in Load Window:
  The load window now displays session data (driver name, vehicle, venue, etc.) for the selected file, matching the behaviour of Circuit Tools 2.
  
  
• Back/Forward Navigation in Load Window:
  Back and forward navigation buttons have been added to the file open dialogue, making it easier to navigate between folders

Bug Fixes

• Stability
  Fixed occasional stability issues in graph refresh, video playback, and sector generation.

• Channels
  Fixed a bug where only the first loaded file was used to populate the channels list. Channels specific to other loaded files were not shown, preventing comparison of those channels between files.
  
  
• Other Fixes
  Fixed a bug where the Export Reference Lap function did not produce an output file.

3.1.24 – 13 February 2026

Features

• Measure Tool: A new analysis tool that allows you to measure channel data between two points. Select a region on the graph to see minimum, maximum, average, and delta values for selected channels in that region.
• Full Screen Video Window: Double-click a video to show full screen and double-click or press Escape to exit full screen.
• Lap Colour Selection: The ability to change individual lap colours has been reinstated, allowing you to customise the appearance of each lap trace.
• File Transfer Wizard Shortcut: Press F2 to quickly access the File Transfer Wizard for quickly copying files from an SD Card.
• Retain Window Layout and Size: Your preferred window size and layout are now preserved between sessions, so Circuit Tools opens exactly as you left it.
• Retain Load Dialogue Settings: File load dialogue display is now retained.
• Custom Circuit Overlay (CIR File): Custom track map CIR files can now be loaded.
• Track Database Auto Update: Circuit Tools can now automatically update the track database, ensuring you always have the latest circuit layouts available.

Improvements

• Faster File Loading: Performance improvements when loading large VBO files.
• Ideal Lap Video Generation: Videos now generate more quickly via hardware acceleration where available.

Bug Fixes

• Stability
  • Fixed a bug that could cause crashes when loading certain VBO files.
  • Fixed a bug where the application would not start if the settings file was corrupted.
• Video Playback
  • Fixed a bug where videos could become out of sync after changing laps.
  • Fixed a bug where hiding and restoring the Video pane in Sessions view caused videos for all selected laps to display instead of the expected single video.
  • Fixed a bug where playing a file without video would give white noise.
• Graph Display
  • Fixed a bug where unfinished laps were not correctly drawn on the graph.
  • Fixed a bug where the graph would not reset zoom level correctly between lap/session and file changes.
  • Fixed a bug that caused data alignment issues when quickly changing lap selection.
  • Fixed a bug where maths channel names were not translated on the graph.
• Map Display
  • Fixed a bug that sometimes made the map cursor remain visible after closing a session/file.
  • Fixed a bug that stopped the "Reset Zoom" button from resetting the map correctly every time.
  • Fixed a bug that caused track maps to not appear in the selection list.
• Delta-T and Sector Timing
  • Fixed a bug that could make a Delta-T jump appear at the start or end of a lap.
  • Fixed a bug where sectors only showed Delta-T when "Ref" was selected for Multi Ideal Laps.
  • Fixed a bug where setting a custom Start/Finish line in non-track database files prevented sector editing.
• File Operations
  • Fixed a bug where VBO files with multiple AVI video files would not load correctly.
  • Fixed a bug with the file renaming functionality for VBO and AVI files.
• Sessions Mode
  • Fixed a bug where loading another VBO while in Sessions mode caused the graph to display incorrectly.
  • Fixed a bug where the last sample of laps in Sessions mode had incorrect values.
• Channels
  • Fixed a bug where the channels list was unavailable for files with no laps.
  • Fixed a bug where custom maths channel units were lost.
• Other Fixes
  • Fixed a bug that prevented the Start/Finish line from the file from being used.
  • Fixed a bug that caused no data to be shown at unknown/non-track database locations in some situations.
  • Fixed a bug that caused playback behaviour issues when Multi-Lap and Ideal Lap were both selected.
  • Fixed a bug that caused playback to revert to the initial position when the graph cursor was not visible.
  • Fixed a bug with the offset between ideal and normal laps after loading files with faster reference laps.
  • Fixed a bug that caused cursor positioning behaviour issued when adding operators in the Maths Channel editor.
  • Fixed minor UI bugs, including ribbon bar movement and tooltip display.

3.0.25 – 6 October 2025

Features

• Latitude and longitude values now displayed in degrees

Bug Fixes

• Fixed an issue where Delta-T could be incorrectly offset from the start of a lap
• Ideal lap video now doesn’t jump back after pausing when using x-axis types other than position
• Resolved several issues with maths channels when language is set to German
• Now prevent invalid characters being used in file renaming
• Improved maths channel handling
• Improved alignment when selected laps have poor positional data
• Improved handling of data with satellite dropouts
  Delta-T values now correct when comparing laps at different log rates
• Accumulate and Integrate functions now work
  Location of previously loaded file now remembered in all situations
• Lap selection changes when video panel was hidden are now retained when video panel is restored
• Occasional misalignment between ideal and reference lap resolved
• General stability improvements

3.0.227 – 4 September 2025

Features

• Ability to add custom sectors directly on the map - Click on the 'Track Options' [..] button, then 'Custom Sectors' to show the 'Sector Editor'.
• File rename facility now present.
• CAN Channel naming from HD Lite files is now reflected in CT3

Bug Fixes

• Fixed an issue whereby pit lane markers would disappear when switching between laps and sessions mode.
• Fixed bug with map being zoomed out after being hidden then shown again.
• Fixed bug whereby sectors in the lap data table were occasionally beyond the extend of the scrollable region.
• Fixed bug with maths channel units not displaying on the graph.
• Issues with setting start finish lines in some situations have been resolved.
• Fixed bug whereby changing graph axis setting didn't refresh graph data.
• Fixed issue when adjusting sector count for custom tracks.
• Fixed issue preventing playback when the video pane was hidden.

3.0.215 – 15 August 2025

Features

• More intuitive approach to setting custom start/finish line on non-circuit db files
• Double click action now maximizes video pane.
• Escape key now restores view if one display pane is maximized.
• German language now fully supported. Change language in Settings -> General -> Language.

Bug Fixes

• User selected ‘Ref’ lap is now retained when ticking a faster lap.
• Histograms were not reflecting units once they were changed in settings.
• Fixed bug resulting in Channels occasionally being removed graph.
• Fixed bug causing map trace to be lost when closing one file with 3 files open.
• Fixed bugs when exporting pit lane and accuracy of pit lane location.
• Fixed an issue that could occur when open a file from file explorer and having more than 1 Circuit Tools 3 instance open.

3.0.206 – 8 August 2025

Bug Fix

• Fixed an issue preventing normal use of Circuit Tools 3 when Windows was using certain display languages.
• Fixed issue with delta-t displaying incorrectly when ideal or multi-ideal were set to ‘ref’ lap
• Fixed occasional crashing issue when ticking and unticking laps quickly.
• Fixed issue loading certain files that do not have associated video

3.0.200 – 7 August 2025

Bug Fix

• Fixed some issues when loading files from File Explorer.
• Improved ability to drag and drop multiple files onto Circuit Tools 3 to load
• Fixed error when loading files recorded by a Lap Timer.
• Fixed playback issues when selecting ideal lap or multi ideal lap as 'ref'.
• Fixed an issue where video could become out of sync in one situation

3.0.196 – 4 August 2025

Bug Fix

• Fixed issue with video player undocking from UI

3.0.193 – 31 July 2025 (First Release)

New and intuitive user interface

• Simplified toolbar
• More responsive video and graph

Brand-new graph

• Clearer and sharper graphed data
• Drag and drop data channels to stack them on the same y-axis
• Double click the Y-Axis to auto scale data in view.

Maths Channels

• Built-in library of maths channels such as coasting, cumulative lateral acceleration, and steering velocity
• Create custom maths channels with flexible maths functions.

Reporting with histograms

• Quickly identify trends and patterns in your data
• Designed for fast visual analysis

New track maps with satellite imagery and overhead car view

• Includes sector highlighting
• View your driving lines on satellite imagery provided by Google and Bing maps
• Set Start/Finish directly on the map

Multi-Ideal lap

• • Provides a theoretical best lap across all loaded sessions.