GPS Race Timer for iPhone

iPhone Acceleration Timing Made Simple

GPS Race Timer is an iPhone utility that times acceleration runs — for example 0–60 mph, 60–120 mph, and quarter-mile sprints — without requiring any additional hardware. You configure the start conditions while the phone is still, and the app will begin timing automatically when a predefined speed threshold or motion is detected. Results are stored on the device and can be exported for further analysis or sharing.

Core capabilities

• Optional PRO upgrade adds advanced tools such as simultaneous lane timing, elevation-difference reporting, and reaction/launch-time recording.
• Built-in presets cover common distances and speed-to-speed intervals (for example: 1/8 mile, 60 ft, and several speed ranges), and each preset can be adjusted to suit your needs.
• The no-cost version allows two recorded measurements per run; purchasing the PRO tier lifts that restriction and unlocks the full feature set.

How measurements are performed

Before a run you define the trigger parameters while stationary; that creates a baseline so the app can detect when to begin timing. Timing starts automatically when the device either reaches the chosen speed threshold or senses motion consistent with a launch. Because the app relies on the phone’s GPS and motion sensors, no external hardware is necessary.

An alternative to consider

If you want another option, try Ubigi (Free). It’s listed as a recommended substitute and offers a free entry-level experience — evaluate it on your device to see whether its workflow and features better match your needs.