GPS lap timing, boost, fuel pressure, per-cylinder timing corrections, and Apple Watch heart rate — all recorded in one app built for performance enthusiasts.
What it does
Set a virtual start line anywhere. ApexLogger auto-triggers on crossing and records split times with millisecond precision.
Connect a Bluetooth OBD-II interface to stream real-time boost, throttle, oil temp, coolant, and engine-specific data.
HPFP and LPFP live monitoring with configurable warning thresholds — critical data for tuned and high-boost builds.
See timing corrections for all six cylinders in real time. Catch knock before it becomes a problem.
Walk your track layout on foot before driving. ApexLogger maps your GPS path and stores it for reference during the session.
Arm a workout session from your wrist or phone. Live BPM appears on the gauges page and is recorded with every track point.
Browse saved runs with peak speed, elapsed time, and point count. Detailed stats view for every session.
No interface? No problem. GPS speed with MPH / KPH toggle is always available — no OBD connection required.
Engine support
| Engine | Cars | Features |
|---|---|---|
| N54 | 135i, 1M Coupe, 335i E9x | Boost HPFP LPFP Timing ×6 |
| N55 | 235i, M2, 335i F30 | Boost Timing ×6 |
| B58 | M240i, M340i, Supra | Boost Knock Retard |
| N52 / N51 | 128i, 328i (NA) | Throttle VANOS |
More engine profiles coming. Request your engine →
Apple Watch
Tap Run or Walk on your Apple Watch to start a workout session. Heart rate streams live to your iPhone gauges and is recorded with every data point — no phone interaction needed at the start line.