---
title: "GPS Speedometer Guides — Setup & How-To Help"
description: "Step-by-step help for GPS Speedometer: switch units, record and export GPX trips, turn on speed-camera alerts, and read your trip stats. Honest, feature-accurate guides."
source: "https://speedometer.app/guides/"
image: "https://speedometer.app/og_image.webp"
---

# GPS Speedometer Guides

Short, honest how-to guides for getting the most out of GPS Speedometer on your iPhone. Every guide describes only what the app actually does — the core speedometer, trip recording, and units are free, and features such as GPX export, speed-camera alerts, and Picture-in-Picture are part of PRO.

## Setup & how-to

[

### Change the speed units (mph, km/h, knots)

Switch the live readout, trip stats, and HUD between miles per hour, kilometres per hour, and knots. Free on every tier.

→](/guides/change-speed-units/)[

### Record a trip and export it as GPX

Log your full route offline, then export it as a standard GPX file for Strava, Komoot, or RideWithGPS. Recording is free; export is PRO.

→](/guides/record-and-export-gpx/)[

### Turn on speed-camera alerts

Enable the PRO SCDB.info speed-camera layer and understand why alerts differ from country to country.

→](/guides/speed-camera-alerts/)[

### Understand your trip stats

What max speed, average speed, distance, altitude, climb, and G-Force each mean — and which are free.

→](/guides/understand-trip-stats/)

![GPS Speedometer projecting a HUD speed readout onto a car windshield at dusk, with a speed-limit alert showing.](/images/photos/speed-limit/02-hud-windshield-alert.webp)

From HUD windshield mode to speed-camera alerts and trip exports — the guides below cover the app's core and PRO features.

## Feature guides

Two of the app’s signature features already have their own in-depth pages.

[

### Set up HUD windshield mode

The full guide to mirroring your speed onto the windshield at night — the app’s HUD reflection mode.

→](/hud-speedometer-guide/)[

### Use Picture-in-Picture while navigating

Keep a floating speedometer visible on top of Apple Maps, Google Maps, or Waze. A PRO multitasking feature.

→](/picture-in-picture-speedometer/)

Looking for pricing? See [free vs PRO](/free-vs-pro/), the [battery guide](/battery-usage/), or the [full FAQ](/faq/).

## Get GPS Speedometer on your iPhone

Free to download, no ads, and the core speedometer stays free forever.

![Speedometer App QR Code](/_image/?href=%2F_astro%2Fqr-code-acquisition.CL72vcG5.png&w=640&h=640&q=85&f=webp)

[![Download on the App Store](/_image/?href=%2F_astro%2FDownload_on_the_App_Store_Badge_US-UK_RGB_blk_092917.CVyK0T4N.svg&w=192&h=64&f=svg)](https://apps.apple.com/app/apple-store/id901574501?pt=100782816&ct=web.speedometer.app.guides&mt=8)

Free download • On iPhone since 2014