--- title: "RV Speedometer App | GPS Speed Tracker for Motorhomes" description: "RV Speedometer. GPS speed does not use wheel rotation or a tire-size setting. It still depends on usable location data. Free download with an optional PRO subscription or one-time purchase." source: "https://speedometer.app/rv-speedometer/" image: "https://speedometer.app/images/features/rv-speedometer.jpg" --- # GPS Speedometer for RVs & Motorhomes GPS speed does not use wheel rotation or a tire-size setting. It still depends on usable location data. [![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.vehicle&mt=8) ![An RV cockpit with a dashboard-mounted iPhone showing GPS Speedometer, looking forward through the wide windshield onto a two-lane rural highway in open countryside](/images/photos/rv/01-rv-cockpit-rural-highway.webp) GPS speed does not use wheel rotation or a tire-size setting. It still depends on usable location data. ## Why RVs Need GPS Speed ### Multi-Day Reliability GPS speed does not use wheel rotation or a tire-size setting. It still depends on usable location data. ### State-by-State Limits Some US states cap RVs and trailer-towing rigs at lower speeds than passenger cars. Get the auto [speed-limit](/speed-limit-app/) alert when the limit changes — no more wondering whether 65 still applies. ### Aging Electronics Older Class A and Class C rigs run on decade-old instrument clusters with sensors that drift. GPS bypasses all of it. If yours has gone fully dark, the [broken speedometer](/broken-speedometer-replacement/) guide covers the full repair-vs-replace story. ## Perfect for RV Life ### Cross-Country Trips - Accurate average speed for trip planning - Distance + duration logged automatically - Altitude for mountain-pass awareness - Works in remote areas with no cell service ### Campground-to-Campground - Realistic ETA with average speed data - Trip log per leg of the journey - Heading + altitude on remote roads ### Class A & Class C Motorhomes - Wide-cockpit big-display readability - Speed-limit auto-detection at highway speeds - Trip log survives engine-off camping breaks ### Class B Vans & Camper Conversions - Same app whether you're in a Sprinter, ProMaster, or DIY rig - Bike lane / urban speed-limit alerts on stealth-camp arrival - Compact-mount friendly for smaller dashboards ### Vintage Class A Restoration - Replaces dead OEM clusters during restoration - Avoids expensive vintage-RV instrument repairs - Non-invasive — no wiring into 1970s harnesses ### Boondocking / Off-Grid - No cell service required for core tracking - Altitude data for elevation-camping decisions - Works in national parks where signal drops ## RV-Friendly Features ### Multi-Day Trip Log Every leg lands in the [trip log](/gps-speed-tracker/) — distance, duration, average speed, route — across full seasons. Export to GPX for travel-log records. ### Big Display Large numerals readable from across a wide RV cockpit. Glanceable while driving. ### Offline Operation No cell signal needed for core tracking. Perfect for remote camping and national-park drives. ### Altitude Tracking Real-time elevation, useful for mountain-pass awareness and high-altitude camping decisions. ### Speed-Limit Alerts Stay within RV-specific [speed limits](/speed-limit-app/) (often lower than passenger-car limits in some US states). ### HUD Mode [HUD](/hud-speedometer-guide/) mode projects speed onto the windshield — useful in older RVs with limited dashboard tech. ![A German Wohnmobil parked at an Alpine campground at golden hour, with the iPhone showing GPS Speedometer's trip-summary view in German with metric units](/images/photos/rv/02-rv-campground-review.webp) Same app, every road. KPH or MPH, German or English — the trip log writes itself. ## How to Set Up in Your RV 1 ### Download GPS Speedometer Free download from the App Store. [![Download on the App Store](/_image/?href=%2F_astro%2FDownload_on_the_App_Store_Badge_US-UK_RGB_blk_092917.CVyK0T4N.svg&w=150&h=50&f=svg)](https://apps.apple.com/app/apple-store/id901574501?pt=100782816&ct=web.speedometer.app.vehicle&mt=8) 2 ### Mount Your iPhone Use a windshield, vent, or dashboard mount — RV cockpits have lots of real estate, pick what works. 3 ### Charge It Long road trips drain GPS-active phones fast. Plug into the RV's 12V outlet or USB. 4 ### Drive Allow time for a usable location reading and keep a clear view of the sky. Acquisition time varies with the device and surroundings; there is no fixed waiting time. ## RV Speedometer FAQ Yes. GPS Speedometer works in any RV regardless of age or model. It uses satellites, not the RV's electronics. GPS provides an estimate of speed over ground, independent of wheel size. Signal quality, obstructions, low speed and processing can affect the reading. A fixed percentage error or greater accuracy than another instrument is not guaranteed. Core GPS speed tracking and trip recording work without internet, with location permission and a usable GPS signal. Automatic road-speed-limit data and weather need internet. Maps and other connected features may be unavailable offline. GPS provides altitude in real time, plus you can see total elevation gained. Useful for monitoring engine load on long climbs. Yes. Trip recording logs every leg. Export GPX files for record-keeping or insurance documentation. Yes. GPS measures the speed of the iPhone (which is in your tow vehicle / RV). Independent of trailer weight, tire size, or load. Battery use varies with the device, battery health, screen brightness, signal and enabled features. No fixed hourly drain or runtime has been established for the app. For long trips, plan a suitable charger or power bank. Free download with an optional PRO subscription or one-time purchase. Recording, saving and basic viewing of trips are free. Detailed route playback and analysis require PRO. ![An iPhone resting on a wooden desk next to a coffee mug, MacBook, and notebook, showing GPS Speedometer's trip-detail view with route map and stats](/images/photos/gps-tracker/02-trip-review-desk.webp) Back home, the day's drive is already logged. Distance, average speed, route — exportable as GPX. ## Related guides [ ### GPS vs analog accuracy Why GPS beats tire-size-dependent stock readings on RVs. →](/speedometer-comparison/)[ ### Tire-size speedometer calculator Punch in old + new tire sizes to see your speedometer error in real numbers. →](/speedometer-calibration/)[ ### GPS speed tracker Multi-day trip log + fleet history for long road trips. →](/gps-speed-tracker/)[ ### Broken speedometer replacement If your RV dash gauge has packed up. →](/broken-speedometer-replacement/)[ ### HUD speedometer guide HUD across the wide RV cockpit. →](/hud-speedometer-guide/)[ ### Speed-limit alerts RV-specific limits, often lower than passenger cars. →](/speed-limit-app/)[ ### Picture-in-Picture speedometer Speed visible while you’re running maps and campground apps. →](/picture-in-picture-speedometer/)[ ### Speed camera alerts Long-distance road trips? Get warned about upcoming speed cameras across 40+ countries. →](/speed-cameras/) ## Drive Your RV with Real Numbers Free download. Multi-day trip log. Works on every road, every trip. ![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.vehicle&mt=8) GPS speed does not use wheel rotation or a tire-size setting. It still depends on usable location data.