The Map tab: your racing line

The Map tab draws your GPS line on the circuit — not the line you meant to drive, the one you drove.

Reading the map

• The line traces your actual path, with every lap of the session drawn together and coloured by speed — blue where you were slowest, red where you were fastest. Wobbles, missed apexes, and wide exits show up plainly, and so does how much your line varies from lap to lap.
• Follow the line through a corner you're unsure about and compare entry, apex, and exit positioning lap to lap.
• The numbered orange dots are LapperSnapper's corner markers. Each matches a row in the Corners card below the map, which lists the corner's direction and apex speed. They're the app's own numbering, not the circuit's official turn numbers.
• To pin a moment from the delta chart to a spot on the circuit, use the map on the Compare tab: as you scrub the chart, a dot moves to that point on track. See Compare laps and read the delta chart.

Map controls

• The Satellite button puts aerial imagery under the line (needs a connection).
• The Full screen button opens a bigger map. On the plain (non-satellite) map you can pinch to zoom into a single corner.

Aggregate overlays (Pro)

With Pro, the full-screen map adds three overlay chips that build cross-lap views from the session's laps (at least two usable laps are needed):

• Heatmap — where the whole session was fast and slow, painted on the circuit.
• Ultimate — the line assembled from your fastest moments across laps, with its time shown above the chips.
• Consistency — how much your line spreads from lap to lap; a wide band marks a corner you haven't decided how to drive yet.

Tip

Higher-rate GPS draws a sharper line. Phone GPS is fine for the big picture; a RaceBox or MyChron makes corner-level line comparison much more precise.