LapVision Mobile vs QUAD

LapVision Mobile is a track-day companion for amateur and professional drivers. It turns your iPhone into a precise lap timer, telemetry recorder and post-session analyser — and integrates with the BLE GPS devices most track drivers already own. WHAT IT DOES Lap timing • Automatic start/finish line detection from your first complete lap, or pick one from the catalogue of major circuits. • Sector splits live during the session, with deltas vs your best sector ("ideal lap"). • Personal best lap highlighted; haptic and sound feedback when a new PB is set. Telemetry sources • Phone GPS + IMU — no extra hardware needed. Works on any recent iPhone running iOS 14 or newer. • RaceBox. • Optional LapVision-CAN adapter — adds engine RPM, throttle, boost, coolant temperature and other CAN-bus signals to your lap data. Works with VAG MQB / PQ (VW/Audi) — Simos 12/16/18/19 and Bosch MED17 / MG1. Analysis • Lap table with per-lap and per-sector deltas, max / avg / min speed, longitudinal and lateral G, brake time, corner count. • Sector detail screen with speed-coloured track map, speed-vs-distance graph, brake / throttle markers, Vmin point. • Cross-session compare — overlay a lap from any past session against the current one. • Corner-by-corner recommendations: carry more speed at apex, brake later, open throttle earlier — derived from a reference lap. Replay • 2D top-down playback with speed-coloured track and a vehicle marker. • Chase and drone camera modes for cinematic playback. • Combo mode — analysis tab and map side-by-side. Video recording (Beta) • Record on-track video with the iPhone camera while telemetry is captured in parallel — both are saved together as one session. • Synced playback overlays speed, lap timer, RPM, boost and gear (with the CAN adapter) on top of your video. • Export the video with the telemetry HUD burned in — share via AirDrop, Messages, Telegram, WhatsApp, or save to the photo library. • Microphone is used to record engine sound together with the video; both stay on your device. Share card • Generate a portrait or landscape image with your lap time, top speed, track silhouette and a photo of your car. Share to Telegram, Instagram, WhatsApp or save to the photo library. Diagnostics (Beta, optional) • Reads diagnostic trouble codes (DTC) over UDS from engine, transmission and ABS modules. Auto-detects VAG vehicles by reading VIN and ECU model. • Live PID telemetry recorder writes engine data to CSV (RaceChrono v3 compatible) for offline analysis. • Requires the LapVision-CAN adapter. Reading-only — no flashing, no calibration changes. DESIGNED FOR TRACK USE LapVision Mobile is built for closed-course driving — track days, time-attack, autocross, dragstrip runs. We do not encourage public-road use of any timing feature. Sessions are stored locally on the device. The app does not transmit your driving data to any servers, does not require an account, and does not show ads. There is no cloud sync; you control where your exports go via the system share sheet. HARDWARE NOTES • External GPS receivers (Dragy, RaceBox) connect via BLE — no cables. First pairing may take ~30 seconds while the device completes a multi-step authentication handshake. • CAN telemetry requires the LapVision-CAN adapter — available separately. • Background GPS is used only during an active recording session so that data is not lost when the screen is off or another app is foregrounded. LANGUAGES English, Russian, Kazakh. PRIVACY Full privacy policy: https://lapvision.app/privacy/ Support and feedback: vwclubkz@gmail.com

A GPS lap timer that works anywhere on Earth, and an integrated vehicle-dynamics G-force meter. Using nothing but your phone's sensors and GPS, it times laps and sectors while showing four-wheel weight transfer, G-forces and chassis attitude in real time. No extra sensors. ■ GPS lap timer Circuits, of course — but you can set a course anywhere in the world. Long-press the map to place start, finish and sector lines, and every crossing splits a lap and a sector automatically. Best lap, last lap and every sector time stay on the main screen, so you can see where you are finding time while you drive. Closed circuits and open point-to-point courses are both supported, so rally and hill-climb stages work too. Save as many courses as you like, set which direction counts as a crossing, and add as many sectors as you need. With no course set, the LAP button still times from where you stand. ■ One integrated meter Four-wheel load, the G-G diagram, yaw rate and roll/pitch on a single screen, right alongside the lap display. Everything you need while driving, in one place. ■ Four-wheel load monitoring Weight transfer is computed from G-forces and your vehicle specs, then shown at each corner as colour and numbers, so you can see whether you are using all of the tyre. Load falling shifts blue, load building shifts red. Delta/absolute and %/kgf are both switchable. ■ G-G diagram Lateral against longitudinal G, with the trail you actually drove and the envelope of the limit you reached. The envelope is where your car's grip runs out, drawn for you. ■ Understeer and oversteer alerts Measured yaw rate is compared against the theoretical neutral-steer reference to catch sharp yaw-rate changes in the transient, and the app calls them out by voice and colour. The axle that is losing cornering force is boxed, so you can tell instantly which end is going. Tune it with a scene (circuit / winding road) × sensitivity profile. ■ Data logger and viewer Record a session and review times, racing line and vehicle data afterwards. A track map coloured by speed, time-series charts of G, yaw rate and attitude, and the G-G diagram all follow one playhead. Understeer and oversteer segments are marked on the charts. Export to CSV to analyse the data in external tools. ■ Customisation Theme (dark / light) and accent colour, which channels appear in the readout column, the range of each meter, load display units, render rate and more. ■ Three steps to start 1. Enter your vehicle info (weight, CG height, wheelbase, track, weight distribution). It works on the defaults, but the more accurate you are, the closer the load readout gets to your real car. 2. Mount the phone rigidly, screen upright. 3. Run calibration once before you drive. No sensors handy? Settings has a "Play demo" mode that replays real recorded track data through every feature. ■ About the in-app purchase Lap timing, the data logger and viewer, understeer/oversteer alerts and UI customisation are Premium features, unlocked with a single payment. There is no subscription and nothing auto-renews. ■ Please read This app is a simulated monitor that estimates and displays vehicle attitude, load, G-forces and understeer/oversteer tendency from phone sensors and GPS. It is not a certified measuring instrument or a safety device. All values shown are approximate and are not guaranteed to be accurate real-world measurements. Load is not a load-cell reading; it is a computed estimate. Timing accuracy depends on your device's. This app is intended for competition use in closed environments such as race circuits. Watching the screen while driving is distracted driving and is illegal and punishable under applicable traffic laws. Never watch the screen while driving on public roads. If you use it on public roads you must comply with all applicable laws and do so entirely at your own risk.