ApexLap vs RaceLineCalc

Your phone becomes a professional data-logger. ApexLap times every lap automatically the moment you cross the start line — reliably, every single time. Built for track days: cars, motorcycles and karting. No manual needed, readable in full sun through a visor, usable with gloves. RELIABLE LAP TIMING — FREE FOREVER • Automatic start/finish detection with millisecond interpolation • Every lap is saved the instant it completes — a crash or dead battery never loses your data • 500+ circuits built in worldwide, karting included — no second app to buy • Create your own start line for any track in seconds • Sessions per circuit, laps sorted by best time, best lap and theoretical best • Your recorded laps, sessions and history are never locked behind a paywall APEX PRO — THE FULL DATA-LOGGER • Video overlay export that actually works: lap time, speed, G-force and track map burned into your footage, fast and reliable • Full telemetry: speed traces, G-forces, auto sectors, live delta vs your best lap • Lap comparison: overlay two laps and see exactly where the time is • External 10 Hz GPS receivers (RaceBox, Garmin GLO, Dual…) and OBD-II engine data • Progression analysis per circuit, session after session • Setup sheets: tires, pressures and settings logged with each session • CSV export, unlimited custom circuits Try Apex Pro free for 7 days with the yearly plan. Monthly and one-time lifetime options available. Your location data stays on your device. No account, no tracking. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://develak.com/apps/apexlap/privacy/

RaceLineCalc calculates a racing line from your own track image, map, plan, sketch, or satellite screenshot. Use the optimized racing line to improve your lap times. Use track analysis to study apex placement, cornering, braking points, speed, and lap time. Create a track project: • Import an image and calibrate it with a known real-world distance. • Trace the left and right track boundaries and place the start/finish reference. • Choose a point-based, car-based, or motorcycle-based model and a vehicle preset. • Run the calculation on your device. Review the result: • Calculated racing line and lap time. • Speed, longitudinal acceleration, lateral acceleration, and braking points. • Calculation stations, source boundaries, and generated track geometry. • Run history and comparison of compatible results on the same track. The point-based model quickly calculates a stable racing line. Car and motorcycle models add vehicle mass, power, grip, braking, dimensions, steering, and lean-related parameters. Presets cover karting, road cars, track cars, and motorcycles, while advanced controls allow deeper experiments. RaceLineCalc is local-first: the calculation runs on the device, and the core project flow does not require an account or upload your track project to a RaceLineCalc server. Model scope: RaceLineCalc calculates on a calibrated flat 2D track model. Elevation, banking, jumps, ruts, changing grip, weather, traffic, live surface conditions, and other real-world factors remain outside the current model. Always combine the calculation with real track knowledge and safe driving or riding practices. RaceLineCalc combines a racing line calculator, track analyzer, lap time calculator, and racing line optimizer in one local-first toolkit. As a practical race line calc, it uses calibrated track geometry and vehicle parameters to estimate the optimal line, speed profile, braking points, and lap time. Minimum-time trajectory optimization: RaceLineCalc solves a constrained minimum-time race trajectory problem on a calibrated flat 2D track. It combines track geometry with a point-based, car-based, or motorcycle-based model to calculate a minimum-time racing line, speed profile, braking points, longitudinal and lateral acceleration, and lap time. Use RaceLineCalc as a race trajectory optimizer, racing line calculator, lap time calculator, vehicle dynamics analysis tool, track analyzer, and trajectory planner. It supports image-based track analysis for karting circuits, indoor tracks, road courses, custom layouts, private test tracks, and local racing venues. The result is a time-optimized trajectory within the selected geometry, vehicle model, grip, power, braking, and configuration limits. Five physics models: point mass, Car V1 and V2, and Moto V1 and V2. Explore additional model-specific overlays and legends, then compare saved runs on the same track. Project run history is preserved after track edits, and results from an older track version are marked.