Speedometer HUD mode for your windshield

Written by Muneeb Rana · Last updated 26 October 2026

Quick answer: The speedometer HUD mode in Speedometer PRO flips the screen horizontally so that, when the phone lies flat under the windshield, the reflection shows your speed the right way round. It works best at night or in low light, keeps the number near your line of sight, and needs no extra hardware beyond a non-slip mat.

TL;DR

• Mirrors the meter for a windshield reflection.
• Best at night; weak in daylight.
• Phone lies flat on the dashboard.
• Use a non-slip mat; never let it slide.

What HUD mode does

A head-up display projects information into the driver's view so the eyes stay closer to the road. Aircraft used them first; some cars now have them built in. Speedometer PRO imitates the idea cheaply: it shows a mirror image of the speed so the windshield glass reflects it back correctly. The listing describes it as HUD mirror mode for windshield night driving.

Setting up the speedometer HUD

1. Park. Open the app and choose HUD mode.
2. Turn screen brightness up, then adjust so it does not dazzle you.
3. Place the phone flat on the dashboard, screen up, below where you look through the windshield.
4. Check the reflection from your seat; slide the phone until the number sits low in your view.
5. Start your trip, then leave the phone alone. Full walkthrough: how to use HUD mode.

Why it is a night feature

A phone screen produces a few hundred to around a thousand nits; bright daylight swamps the faint reflection. At dusk and at night, the same reflection is easy to read. Dark themes with a cyan or green number usually reflect most clearly. Some windshields with special coatings produce a double image.

Safety notes

Do not place the phone where it covers airbags or slides under braking. If the reflection distracts you or sits in your direct view of the road, move it lower or switch it off. Treat the figure as an estimate and keep the car's own speedometer as your reference. Our safety page has more.

How it compares

Several apps offer a HUD view; Speedometer 55 and Speedometer Speed Box list one, as does Speedometer». See best HUD speedometer apps. Dedicated plug-in HUD units are brighter but cost money and need wiring or an OBD port.

Availability

HUD mode appears in both store listings and screenshots.

Related: HUD speedometer guide · How to use HUD mode · What is a HUD? · HUD display for car: your options · Best HUD speedometer apps · Speedometer app safety: how to use it without distraction · Speedometer app features · Speedometer PRO price: free with optional Premium

Get Speedometer PRO on Google Play · Download on the App Store · Set it up before you move; never handle your phone while driving.

Sources

• Speedometer PRO・MPH Tracker (Google Play listing): play.google.com (accessed 26 October 2026)
• Speedometer PRO・MPH Tracker (App Store listing): apps.apple.com (accessed 26 October 2026)
• Head-up display (Wikipedia): en.wikipedia.org (accessed 26 October 2026)
• Distracted Driving (NHTSA): nhtsa.gov (accessed 26 October 2026)