Pocket Performance is a phone-only car performance timer (0-60, quarter mile, top speed) with a neon UI that looks great. The core app is free and includes garage, standard runs, run history, auto-stop and traffic light start, while leaderboards, Track Mode, video proof and advanced telemetry are in a one-time Pro Pack (no subscription), which I like. The vehicle form is detailed (drivetrain, gearbox, powertrain, engine, mods).