GPS Toolkit – GNSS
Multi-constellation GNSS tools
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Five coordinate formats, multi-constellation sky plot, GPX, offline-friendly maps. The GNSS multitool every outdoor user wishes their phone shipped with.
GPS Toolkit – GNSS turns your phone into a pro-grade GNSS instrument.
Whether you're hiking off-trail, sailing offshore, surveying a job site, or simply curious about the satellites overhead, GPS Toolkit gives you the data professionals need — without the bloat, ads, or accounts.
— LIVE GNSS DATA —
• Every visible satellite from every constellation: GPS, GLONASS, Galileo, BeiDou, QZSS
• Sky plot with azimuth and elevation
• Signal-to-noise bars per satellite
• Real-time fix quality, HDOP, accuracy
— PRECISE POSITION —
• Five coordinate formats: Decimal Degrees, DMS, DDM, UTM, MGRS
• Altitude (GNSS + barometer when available)
• Speed, course, magnetic heading
• Configurable units: metric, imperial, or nautical
— MAPS & TRACKS —
• OpenStreetMap with tile caching for limited connectivity
• Record tracks with one tap, in foreground or background
• Import and export GPX (industry standard, compatible with every GPS tool)
• Waypoints with categories and custom labels
— NAVIGATION —
• Bearing and distance to any waypoint
• Proximity alerts with configurable threshold and sound
• True magnetic compass, GPS-independent
— TOOLS THE PROS USE —
• Geodesic calculator: Vincenty-precision distance, midpoint, projection
• Background tracking continues with the screen off
• Live Activities on the Lock Screen and Dynamic Island
• Available in English, French, Spanish, German, Italian, Portuguese, Dutch, Japanese
— PRIVACY FIRST —
• Everything stays on your device
• No account, no sign-up, no tracking
• No ads, no in-app purchases
• Built on open, audited geodesic libraries
Built by an outdoor user who got tired of bloated GPS apps. If you want the GNSS Swiss Army knife on your smartphone, this is it.
Note: GNSS accuracy depends on your device's hardware, sky visibility, and environment. Indoor use and dense urban canyons will degrade fix quality on any GPS app.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, SARL TWIXTECH, 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
- SARL TWIXTECH
- Size
- 32.9 MB
- Category
- Navigation
- Compatibility
Requires iOS 16.1 or later.
- iPhone
Requires iOS 16.1 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 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 TWIXTECH
