I find car heads-up displays (HUDs) really convenient and helpful, but my car doesn't have one. Thankfully, the HUD Speedometer Speed Monitor app on my phone creates a HUD for my vehicle. Its free ...

Whether you’re cruising down the highway, biking through the city, sailing along the coast, or just out for a walk, Speedometer × is the ultimate travel companion to keep you informed and in control.

The speedometer, of course, tells you how fast or slow your car is moving when you’re behind the wheel. The traditional speedometer shows a hand that raises or lowers, or swings left and right, when ...