GPS Toolkit – GNSS

Twixtech

About this app

GPS Toolkit – GNSS turns your phone into a pro-grade GNSS instrument. No account, no ads, no in-app purchases.

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.

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 AND 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
• Persistent notification with live stats during recording
• 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.

PERMISSIONS
• Location (fine + background): needed to display position, record tracks, and continue tracking when the screen is off
• Notifications: used for the foreground service notification showing live recording stats
• Storage: used only when you import or export GPX files

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.

What’s new

First release. GPS Toolkit – GNSS brings live multi-constellation satellite data (GPS, GLONASS, Galileo, BeiDou, QZSS), five coordinate formats (DD, DMS, DDM, UTM, MGRS), OpenStreetMap with track recording, GPX import and export, waypoints, bearing-distance navigation, magnetic compass, geodesic calculator, foreground recording with persistent notification, and full localization in eight languages. No account, no tracking, no ads.