LapperSnapper has four main tabs along the bottom.

The main tabs

• Sessions — your library. Every recorded, downloaded, or imported session lives here, grouped and sortable. Tap a session to analyze it.
• Record — live recording with your phone's GPS or a RaceBox, including Drive mode and the live HUD.
• Import — bring data in: scan and download from a MyChron, or pick a file (.xrk, .ubx, .csv, .mp4). Your saved devices are managed here too.
• Settings — units, your account, cloud sync, the Garage, and your Pro subscription.

Inside a session

Open any session and you get a row of tabs:

• Overview — the summary: laps, best lap, coaching insights, and tire pressures.
• Map — your racing line drawn on the circuit.
• Laps — every lap with its time and sectors.
• Compare — two laps side by side: speed and delta by distance, synced to the map.
• Channels — the data traces: speed, and engine channels like RPM and temperatures if your logger records them.
• Video — your GoPro footage with telemetry overlaid.

A good first route

Open the demo session, look at Overview for the coach's insight, then Compare your best lap against another — that's the core loop of the whole app.