The Mini4WD Racing Notebook is the ultimate track-side companion to mini4wdshowdown.com, designed specifically to help Mini4WD racers time runs, log setups, and analyze performance. Stop guessing what makes your car fast and start tracking exactly how your tuning impacts your track splits.

Whether you are testing a new motor or adjusting your battery voltage for a tournament, this app provides a dedicated stopwatch racing experience with high-contrast visuals and haptic responsiveness built for high-speed track environments.

Precision Track-Side Lap Timer

Time a run using a specialized stopwatch featuring large, track-ready buttons and instant lap splits.
Feel every input with native haptic feedback—vibrating on start, lap, and stop so you can keep your eyes on the RC racing timer and the track.
Select your lane count (3 or 5 lanes) and start lane to contextualize every session.
Comprehensive Setup Logging

Save your run as a detailed notebook page linking your track times to your exact car setup.
Log critical Tamiya tuning data, including your motor choice (from a built-in list of 27 Tamiya motors), battery voltage, rollers, brakes, and gears.
Record your race results (WIN, LOSS, or CO) and attach up to two track-side photos to visually document your setup.
Analyze and Optimize

Review your history of runs grouped perfectly by car name.
Filter your notebook pages by specific registered events or view today's local runs to quickly analyze post-race setup performance.
Built for the Track

No signal? No problem. The app features complete offline sync capabilities, instantly saving your pages locally and automatically syncing to your mini4wdshowdown.com account the moment your device reconnects.
Seamlessly access your event registrations and credit balance using your existing Mini4WD Showdown login.