Dexian Timer

Data Makes You Faster

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Dexian Timer is a professional lap timing and telemetry analysis tool designed exclusively for track day and karting enthusiasts. Fully compatible with the high-performance 25Hz Dexian D1 GPS, RaceChrono DIY protocol devices, and .VBO file imports, it delivers the ultimate smooth experience for lap timing and data review. KEY FEATURES: • Auto Lap Timing & Real-Time Delta: Intelligently detects your current track and automatically triggers timing when crossing the start/finish line. During your stint, it displays a precise, position-based real-time delta against your session's best lap, letting you instantly know your current pace on the fly. • High-Precision GPS Data: Supports external GPS receivers with up to a 25Hz update rate, completely eliminating the lag of built-in smartphone GPS. • Lap Delta & Trajectory Comparison: Compare two laps side-by-side on screen to visually identify your fast and slow sectors, helping you find exactly where to push harder. • Action Camera Control & Auto-Sync: Remote control action cameras directly in the app. Video and telemetry data timecodes are automatically and precisely synced, saving you from tedious manual timeline edits (Exclusive to Dexian D1 users). • 1,000 Built-in Tracks: Pre-loaded with nearly 1,000 touring car and karting tracks worldwide. No manual start/finish line setup required—just arrive and race. • Perfect Map Alignment in China: Automatically handles map coordinate conversions to completely eliminate the trajectory offset issues common in traditional apps. Your racing line aligns perfectly with the map. ECOSYSTEM COMPATIBILITY Supports any Bluetooth GPS receiver based on the RaceChrono BLE DIY protocol. Seamlessly imports and exports industry-standard .VBO files to perfectly integrate with your existing data ecosystem. IMPORTANT SAFETY DISCLAIMER Motorsport is inherently dangerous. This application is designed exclusively for use on closed-circuit tracks and professional racing facilities. DO NOT use this app on public roads. The data is for reference only. Always prioritize safe driving.

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New Features: Lap Video Export with Data Overlay: We are thrilled to introduce lap video exports featuring professional data overlays! The newly redesigned dashboard includes speed, a G-force friction circle, a mini track map, and more, making your track highlights look incredibly professional and ready to share with a single tap. Dynamic G-Force Friction Circle: Added a professional G-force friction circle overlay to the session map interface. It is fully draggable, allowing you to position it anywhere within the video and map area to suit your preference. Point-to-Point Track Support: Added full support for Point-to-Point tracks with separate start and finish lines, perfect for hill climbs or special stages (such as Nürburgring BTG). New Track Support: Added Heze International Circuit, Shangyu Shunkang International Racing Park, Shunde P1 International Circuit (under construction), Dongguan Jingsu Karting (Daojiao), and Fuzhou Subo Karting tracks. Improvements & Fixes: UI & Visual Enhancements: Comprehensively improved dashboard readability for bright sunlight and high-glare driving environments. Interactive UX Tweaks: Tapping any specific lap from the session detail list now directly jumps to display that exact lap's map trajectory and corresponding telemetry data. Persistent Video Links Fix: Fixed an issue where linked onboard videos from your local photo album would break after reinstalling the app. The system now automatically re-resolves and restores your previously linked video assets. Trajectory & Map Alignment Optimization: Improved the underlying curve smoothing algorithms for much smoother GPS map trajectories. Also fixed a bug where the start/finish line would not move synchronously with the GPS trajectory during calibration mode. Compliance Update: Officially added the China Mainland ICP filing number to the About page.

The developer, 骞 魏, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location

Privacy practices may vary based, for example, on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Provider
  • 骞 魏
Size
  • 108.1 MB
Category
  • Sports
Compatibility
Requires iOS 14.0 or later.
  • iPhone
    Requires iOS 14.0 or later.
  • iPod touch
    Requires iOS 14.0 or later.
  • Mac
    Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English and Simplified Chinese
Age Rating
4+
Copyright
  • © 2026 Dexian Racing