GPS-location-app
Health & Fitness
Free · Designed for iPad. Not verified for macOS.
Keeps recording where GPS cannot: tunnels, car parks, weak signal. The method, the equations and the measured error are all in the app.
GPS-location-app records walking, running, cycling and riding workouts with detailed route tracking on iPhone, iPad and Apple Watch.
It keeps recording where satellite positioning does not. In tunnels, underground car parks, streets between tall buildings and other places a GPS fix is lost or turns unreliable, Velocity Mode carries the route forward from the motion sensors — speed from how the vehicle vibrates, direction from the gyroscope and magnetometer — and rejoins real GPS automatically the moment a usable signal returns. It starts from the last speed actually measured, so the track stays joined up rather than restarting from zero.
Velocity Mode is documented rather than asserted. Settings contains the full method, the equations behind it, and the measured error across 23 instrumented journeys — including the cases where it does not work. A complete paper is readable inside the app.
FEATURES
• Live route tracking during workouts, on iPhone, iPad and Apple Watch
• Velocity Mode: keeps recording through tunnels, car parks and weak signal
• Automatic handover — no need to switch anything on mid-workout
• Workout map with historical route browsing and road alignment
• Distance analysis by week, month, year and all time
• Daily and cumulative charts for long-term progress
• Heart rate, calories, pace, elevation and split tracking
• Apple Health integration for workouts and distance
• Optional diagnostics logs — the raw sensor data behind every accuracy figure
HONEST ABOUT ITS LIMITS
Velocity Mode is an estimate, not a substitute for GPS. It is accurate to within a few per cent on open roads and much less so at walking pace, in a hand, or on a motorcycle with the phone in a pocket — a case where it does not work at all. Aircraft speed cannot be recovered without GPS. All of this is measured, written down, and shown in the app rather than hidden.
Built for people who want more detail than a basic workout tracker, while keeping recording simple and fast.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Velocity Mode now takes over when GPS degrades, not only when it disappears. Under partial cover — a long tunnel, a covered ramp, a street between tall buildings — fixes keep arriving but are worth little. The route now hands over after twelve seconds without a trustworthy fix, carrying the last measured speed so it stays joined up.
• Fixed a speed readout that showed 0 km/h while genuinely moving. Speed was worked out by differencing two positions, which needed a guard against noise, and that guard wrote a hard zero at low speed on perfectly good GPS. Speed now comes from Doppler, which is measured rather than inferred and is accurate at walking pace.
• Two new settings. Velocity Mode can be limited to when the workout is on screen if you would rather have the battery, and the per-workout diagnostics logs can be switched off if you would rather have the storage. Routes record identically either way.
• The paper is now readable in the app and updates on its own, so corrections and new results arrive without waiting for an app release. A copy still ships with the app and works offline.
• Added a new measured failure: on a motorcycle with the phone in a pocket, the estimate carries no speed information at all. It is written up in full rather than left out.
• New app icon.
• Removed the road-alignment API key. Road alignment still works — it now always uses the OpenStreetMap path that was already the default.
The developer, chienchung Yu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- chienchung Yu
- Size
- 15 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.5 or later.
- iPhone
Requires iOS 18.5 or later. - iPad
Requires iPadOS 18.5 or later. - Mac
Requires macOS 15.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.5 or later. - Apple Watch
Requires watchOS 11.5 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Yao-Hsing Yu