タイヤの荷重移動アプリ
タイヤの荷重移動が見れるのが面白い。ドライビングの練習に最適
Free
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About
This app uses your phone's sensors and GPS to provide real-time lap timing, sector splits, and vehicle dynamics data like G-forces and four-wheel weight transfer. It also includes a data logger for post-drive analysis and alerts for understeer and oversteer.
✓GPS lap and sector timing
✓Four-wheel load monitoring
✓Real-time G-G diagram
✓Understeer/oversteer alerts
✓Data logging and playback
✓Customizable UI themes and units
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What's New in QUAD
1.1.0
August 21, 2026
LAP PAGE Swipe right on the measurement screen to open a detail view of the current lap: last and best lap times, the delta to your best, and per-sector split times with sector deltas, all on one screen. Tap the screen to cycle the delta display through three modes (per-sector best, cumulative best, cumulative only). Crossing the control line or a sector line shows the result in large type for a few seconds. CAR ART ON THE GAUGE Choose from six body types: sedan, sports, midship, rear-engine, hot hatch and EV. A top view of the car now sits at the centre of the four-wheel load gauge, making weight transfer easier to read at a glance. MORE CIRCUITS The preset catalogue grows from 35 tracks to 68. 19 circuits in the United States are new, and Japan expands from 21 to 35. A track that is not in the catalogue can still be timed: set the control line yourself from the course setup screen. CALIBRATION A clearer step-by-step flow, with a confirmation prompt before re-calibrating. More robust, with revised logic that now establishes the acceleration-G direction immediately. FIXES Fixed a crash that could occur when switching the driving direction in the course setup screen.
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FAQ
Does QUAD-G ForceMeter + Laptimer have ads?
No, QUAD-G ForceMeter + Laptimer does not contain advertisements. It offers a free experience with optional in-app purchases for advanced features.
What vehicle information is needed for QUAD-G ForceMeter + Laptimer?
To get the most accurate load readouts, you need to enter your vehicle's weight, CG height, wheelbase, track width, and weight distribution. The app works with defaults but is more precise with accurate vehicle specs.
Can QUAD-G ForceMeter + Laptimer be used on any track?
Yes, QUAD-G ForceMeter + Laptimer's GPS lap timer works anywhere on Earth. You can set up courses on closed circuits or open point-to-point routes like rally stages.
What are the in-app purchases for QUAD-G ForceMeter + Laptimer?
The in-app purchase unlocks features such as lap timing, the data logger and viewer, understeer/oversteer alerts, and UI customization. The base app is free to download and use.
How does QUAD-G ForceMeter + Laptimer detect understeer and oversteer?
It compares the measured yaw rate against a theoretical neutral-steer reference. If sharp yaw-rate changes are detected in transient conditions, the app alerts you by voice and color, indicating which axle is losing cornering force.
Can I export my data from QUAD-G ForceMeter + Laptimer?
Yes, you can export your recorded session data to CSV format. This allows for further analysis of lap times, racing lines, and vehicle data in external tools.
What devices does QUAD-G ForceMeter + Laptimer support?
QUAD-G ForceMeter + Laptimer is available for iPhone, iPad, and iPod. It is rated for ages 4 and up.
How often is QUAD-G ForceMeter + Laptimer updated?
The app was last updated on August 5, 2026, with version 1.0. Further updates will be released by developer SYNSETECH LTD to improve functionality and add features.