Roam: GPS Speedometer

Roam shows one thing: your current GPS speed, in big digits on a pure black screen, with nothing else fighting for your attention.

It exists because leaving a navigation app open for hours just to watch your speed is rough on OLED screens. A bright, static interface slowly burns itself into the panel. Roam is designed from the ground up to leave no trace on yours.

How it protects your screen:

* The readout moves. Every few minutes (1 to 10, your choice) the speed display glides to a new position, so no area of the panel carries the load for long.
* Pure black background. On OLED, black pixels are switched off, so only the digits are lit.
* Colour drift. The digit colour slowly shifts hue over time, so no single subpixel is driven hard at one fixed colour for hours.
* Outline digits. An optional hollow digit style that lights a fraction of the pixels.
* Brightness control. Dim the display from inside the app without touching your system settings.

The rest:

* Current speed in km/h or mph, plus a session max.
* The screen stays awake while the app is open.
* No ads, no tracking, no network access at all. The only permission is location, used for GPS speed.
* Tiny: the app is well under 100 KB.

Roam is free and open source (AGPL-3.0). Source code and privacy details are linked below.

HUD mirror for reading the speed off the windshield. Colour presets for the readout (white, red, orange, yellow, green, cyan, blue). Size sliders for the speed and for the max speed and heading lines. Shows 0 while parked instead of two dashes. A What's new note after each update, plus the full history under Release notes in settings.