How zigmaty Works
zigmaty is a GPS speedometer for the browser. It uses your device's location permission to calculate live movement speed, distance, elapsed time, max speed, average speed, and signal quality.
GPS speed in the browser
When you press Start, the browser asks your device for location updates. If the device provides a direct speed value, zigmaty uses it. If not, it estimates speed from the distance between recent GPS positions and the time between them.
What affects accuracy
GPS quality depends on sky visibility, buildings, tunnels, trees, device hardware, power saving mode, and how often the browser delivers location updates. Stronger GPS accuracy usually means smoother readings.
Privacy by default
Trip calculations happen on your device. zigmaty stores preferences and simple trip summaries in localStorage, and it does not upload your GPS readings to a server.
PWA and offline support
After the first visit, the app shell can be cached by the browser so zigmaty opens faster and can load without a full network request. Live speed still needs GPS access from the device.
Common questions
These details help users understand what zigmaty can and cannot do before they rely on a reading.
Does zigmaty use my internet speed?
No. It measures movement speed from GPS, not network download or upload speed.
Does zigmaty save my exact location?
No. Trip history stores summary numbers such as distance and speed, not a route map.
Why does HTTPS matter?
Modern browsers require HTTPS before they allow a website to request location permission.
Can I install zigmaty?
On supported browsers, zigmaty can be installed as a PWA after the browser presents an install option.
Can it replace vehicle instruments?
Use built-in vehicle, marine, or safety instruments as the official reference. zigmaty gives you a clear GPS reading in the browser.