I’ve been testing Speedometer by GeniusTools Labs for a few weeks now, and it’s become a staple on my daily commute. The app opens to a clean, large-digit display that’s easy to glance at—way clearer than my aging car’s analog dial in low light. It’s not just about aesthetics, though; the GPS-based tracking is consistently within 1-2 mph of my vehicle’s built-in speedometer, which I verified on a quiet stretch of highway. I especially appreciate the night mode, which switches to a dark theme that doesn’t blind you during evening drives. It’s also handy for biking or running, since it logs max speed and distance over time. One small gripe: it does drain battery a bit faster if you use it for hours, so keep a charger handy for long trips. Still, for a free tool, it’s impressively reliable and straightforward. No complicated setup, no ads jumping out at you—just open and go.