# Dexian Timer — Data Makes You Faster

> Data Makes You Faster (iPhone/iPad app by 骞 魏.)

- Source: https://appshunter.io/ios/app/dexian-timer/id6759848554 (this page in markdown: same URL + `.md`)
- Developer: [骞 魏](https://appshunter.io/developer/1872259603)
- Category: Sports, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.5 · 133 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-05-01
- Data updated: 2026-09-01
- User reviews in markdown: https://appshunter.io/ios/app/dexian-timer/id6759848554/reviews.md

## What is Dexian Timer?

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.


## Version history (last 5 releases)

### 1.3.0 — 2026-08-20

New Features:
1. Bluetooth OBD Telemetry Support: A major milestone! We now support Vgate Bluetooth OBD modules. You can read real-time underlying vehicle performance data (currently supporting Engine RPM and Throttle Position). 
2. Comprehensive OBD Visual Integration: Real-time OBD telemetry is now displayed directly on the live dashboard status bar. Furthermore, the video export data overlay (HUD) has been fully upgraded to include OBD gauges, making your track highlights look like professional motorsport broadcasts.
3. New Track Support: Added Guangzhou Superkart (Fangcun), Shanghai Shengdao Kuye International Karting Park (Sanlin & Baoshan), Shanghai Laikai Karting (Baoshan), Beijing Wenyuhe International Karting (Reverse layout), and Tianjin Jisu Xingchen International Karting (Reverse layout).

Improvements & Fixes:
1. UI & Layout Enhancements: Refined the hardware status cards and sensor layouts on the home screen; safely enlarged and optimized the dynamic QR code layout in both portrait and landscape modes for easier external camera scanning.

### 1.2.1 — 2026-08-06

New Features:
Dashboard Orientation Setting: Added a new setting to manually customize and lock the dashboard screen orientation, accommodating various in-car phone mount setups.
Video Indicator in Session History: Added a clear visual indicator in the session history list, allowing you to instantly identify which track sessions contain associated video footage.
Video Cache & Storage Management: Introduced a new tool to clean up imported video caches and automatically remove orphaned camera recordings, helping you efficiently free up device storage.

Improvements & Fixes:
Settings & UX Enhancements: Reorganized the video settings menu and relocated the video offset controls for better accessibility; unified the styling of segmented controls across the app; added a confirmation prompt after saving settings; significantly improved the session history list to perfectly preserve and restore your exact scroll position.
Delta & Recording Logic Fixes: Fixed an issue where the "Session-Best" delta reference failed to update correctly during a live session. The app now strictly uses GPS timestamps when ending a live session to ensure absolute data accuracy.
UI Text & Detail Tweaks: Clarified the instructional text for DJI video startup offsets and camera cleanup warnings to prevent accidental data loss; shortened the Google Maps provider label for a cleaner UI layout.

### 1.2.0 — 2026-07-16

New Features:
Universal Video Auto-Sync: A pioneering new feature! Freeing you from being tied to specific camera brands or models, this provides a truly universal sync solution. A dynamic timestamp QR code is now displayed on the ready-to-record screen. Simply use any camera to record your phone screen capturing this QR code before driving. Upon video import, the system will automatically perform a visual scan to achieve millisecond-perfect alignment between your video and telemetry data, completely eliminating the need for tedious manual timeline adjustments.
Live Delta Reference Customization: We have added a new baseline reference setting, allowing you to set your "Day-Best" lap as the reference lap. This provides a more tailored real-time delta calculation that better fits your actual driving needs.
New Track Support: Added track data for Hangzhou HKC Huahai Karting Club and Nanjing Racing Galaxy Karting Club.

Improvements & Fixes:
Dashboard Visual Enhancements: Significantly enlarged the live delta value font in the portrait dashboard to greatly improve quick-glance readability while driving; redesigned and optimized the layout of the home status cards, hardware controls, and recording buttons.
Interactive UX Tweaks: Improved the "Stop Recording" confirmation dialog and button sizing, and introduced a 3-second auto-dismissal timeout for inactivity. This effectively prevents accidental taps from keeping the dialog on screen and blocking your driving view; optimized the scrolling logic on the data review page, allowing the session summary to now scroll seamlessly with the lap list.
Voice Announcements: Refined the lap time voice announcements while driving, adopting a more natural and accurate pronunciation for decimal milliseconds to provide clearer and more professional audio feedback.

### 1.1.4 — 2026-06-24

New Features:
1. Landscape Dashboard Clock: Added a real-time wall clock display to the landscape live dashboard, allowing drivers to easily keep track of the current time during their track day sessions.

Improvements & Fixes:
1. Track Data Hotfix: Corrected the start/finish line coordinates for the Shunde P1 International Circuit to ensure perfectly accurate auto-lap timing and telemetry analysis.
2. Video Sync Optimization: Loosened the duration tolerance when matching onboard videos with GPS telemetry data. This significantly reduces import errors caused by minor duration discrepancies.

### 1.1.3 — 2026-06-23

New Features:
1. Built-in Phone Camera Recording: You can now use your phone's native camera to record your track sessions directly within the app, seamlessly syncing onboard video with your telemetry data without needing an external action camera.
2. Transparent Overlay Export: Designed for advanced video creators, you can now export your telemetry HUD with a completely transparent background. This is perfect for custom compositing in third-party video editing software like Premiere Pro or Final Cut Pro.
3. New Track Support: Added Beijing Wenyuhe Karting, Hangzhou Ruisu Karting, and Nanjing Liwan (Jiangning) Karting tracks.

Improvements & Fixes:
1. Dashboard Rotation Lock: The live dashboard orientation is now automatically locked during active recording sessions. This prevents unintended screen flips caused by heavy G-forces, sharp cornering, or track bumps.

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## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*