Phone GPS vs RaceBox: what accuracy you actually get
By LapperSnapper ·
You don't need hardware to start — and it's worth knowing exactly what hardware buys you when you're ready. The honest version, with numbers.
What your phone gives you
Phone location-update rates and accuracy vary by handset, operating system, sky view and mounting. Even so, a phone is enough to time laps, draw your racing line, find the corners, and name the one that cost you the most. Hit Record in LapperSnapper and that's a full session — the complete analysis, not a preview.
What up to 25 Hz sharpens
RaceBox Mini and Mini S provide 25 Hz GNSS, while RaceBox Micro specifies up to 25 Hz; each also includes an accelerometer and gyroscope. The denser fixes make apex speeds, sector deltas and braking points more precise. The verdict rarely changes; the resolution does.
Getting RaceBox data in
LapperSnapper connects to the RaceBox over Bluetooth: record live, or — on a Mini S or Micro — download the onboard recordings straight off the device, split into one session per run, and pick the runs you want. No other app in the loop. Prefer files? A .ubx shares straight to LapperSnapper or loads from Files. Same engine as every other source: line, sectors, ultimate lap, corner losses, traction.
So which should you run?
Start with the phone — it's free and already in your pocket. Upgrade when tenths matter: if you're chasing apex-speed deficits and sector-level habits across sessions, the RaceBox's denser data makes the picture more precise. The logger raises the resolution, not the verdict.
Verification. RaceBox sampling, sensors and storage checked against the official Mini/Mini S and Micro specifications; LapperSnapper recording and import behavior checked against the current app implementation.