Best Ordnance Survey App

48+ iOS apps curated and reviewed

4.1 avg rating
17 free apps
Updated June 2026

OS Maps is the household name in ordnance survey app, but it's far from the only option. We track 48+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Ordnance Survey App (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OS Maps: Walk, Hike, Run, BikeOS Maps: Walk, Hike, Run, BikeFree4.7★ (440)NoYesAug 2026
2AllTrails: Hike, Bike & RunAllTrails: Hike, Bike & RunFree4.9★ (1M)YesYesAug 2026
3Topo Maps+: Topographic MapsTopo Maps+: Topographic MapsFree4.7★ (9.3K)NoYesAug 2026
4UK MapUK Map$9.993.3★ (7)NoYesAug 2026
5OutDoors GPS – Offline OS MapsOutDoors GPS – Offline OS MapsFree4.6★ (58)NoYesAug 2026
6Memory-MapMemory-MapFree4.5★ (52)NoYesMay 2026
7OldMapsOnline - History & MapsOldMapsOnline - History & MapsFree3.3★ (22)YesYesJul 2026
8LandMap Property Line FinderLandMap Property Line FinderFree4.2★ (3K)YesYesAug 2026

Top Picks for Ordnance Survey App

OS Maps: Walk, Hike, Run, Bike#1

OS Maps: Walk, Hike, Run, Bike by Ordnance Survey

Trail map, plan & GPS navigate
Editor's Choice
🗺️ Navigation
4.7😐(440 ratings)
FreeIn-App Purchases
OS Maps: Walk, Hike, Run, Bike screenshot 1
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OS Maps: Walk, Hike, Run, Bike screenshot 5
OS Maps: Walk, Hike, Run, Bike screenshot 6

Discover and plan outdoor adventures with detailed maps and GPS navigation. Track your hikes, runs, and bike rides, and stay safe with offline maps and community alerts. Explore new trails and relive your past activities.

What We Love

  • 🗺️ Excellent OS mapping
  • 📍 Accurate GPS location tracking
  • 🛠️ Useful route planning tools
  • 🔋 Offline maps for battery life

Room to Improve

  • 🐛 Frequent app crashes and bugs
  • ⏱️ Slow map loading and refreshing
  • 🔒 Subscription issues and login problems
AllTrails: Hike, Bike & Run#2

AllTrails: Hike, Bike & Run by AllTrails, Inc.

GPS Hiking & Biking Trail Maps
Strong Contender
💪 Health & Fitness
4.9😐(1M ratings)
FreeAdsIn-App Purchases
#4in Health & Fitness
AllTrails: Hike, Bike & Run screenshot 1
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AllTrails: Hike, Bike & Run screenshot 6

Discover and navigate over 500,000 trails worldwide for hiking, biking, and running. Find detailed reviews, plan your adventures with GPS and offline maps, and share your experiences with a community of outdoor enthusiasts.

What We Love

  • 🚀 Excellent for finding and tracking trails
  • 📍 Accurate GPS and offline maps
  • 📸 Helpful user-submitted photos and reviews
  • 🗺️ Wide selection of trails

Room to Improve

  • 🔋 High battery consumption
  • 🐛 Frequent crashes and glitches
  • 🤔 Unintuitive user interface changes
Topo Maps+: Topographic Maps#3

Topo Maps+: Topographic Maps by Glacier Peak Studios LLC

Offline Maps & GPS Navigation
Worth Considering
🗺️ Navigation
4.7😊(9.3K ratings)
FreeIn-App Purchases
#69in Navigation
Topo Maps+: Topographic Maps screenshot 1
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Topo Maps+: Topographic Maps screenshot 5
Topo Maps+: Topographic Maps screenshot 6

Plan and execute backcountry adventures with offline topographic maps and GPS navigation. Features include route building, waypoints, land boundaries, and on-trail tools. Integrates with Apple Watch and CarPlay for seamless outdoor exploration.

What We Love

  • 🚀 Accurate offline maps
  • 📍 Reliable GPS tracking
  • 🗺️ Variety of map options
  • 🔍 Detailed trail information

Room to Improve

  • 🐢 Slow map downloads
  • 🤔 Confusing user interface
  • 🔒 Paywall for many features

More Ordnance Survey App apps to explore

4
UK Map
UK Map
UK Map
Ordnance Survey® map data
$9.99

Explore Great Britain with detailed offline maps using Ordnance Survey data. Download free 1:25,000 and 1:10,000 scale maps, plan routes, mark waypoints, and view terrain in 3D. Access place names, street names, and postcodes without an internet connection.

Unlimited free map downloadsOffline map accessRoute planning and track recording
🗺️ Navigation
(7)
free with in-app purchases
5
OutDoors GPS – Offline OS Maps
OutDoors GPS – Offline OS Maps
OutDoors GPS – Offline OS Maps
Plan Hiking & Biking Routes
Free

Navigate the outdoors with confidence using this app's offline maps and route planning tools. Discover and create hiking, biking, and running routes, track your journey, and save favorite locations. Explore with various map layers and a built-in compass, even without a phone signal.

Offline OS Maps accessRoute planning and discoveryGPS tracking and statistics
💪 Health & Fitness
(58)
free with in-app purchases
6
Memory-Map
Memory-Map
Memory-Map
Topo Maps / Marine Charts
Free

Transform your device into an outdoor GPS or marine chart plotter with detailed offline maps. Track your location even without a signal, plan routes on your computer, and analyze your adventures. Trusted by professionals for various outdoor activities.

Offline Topo and Marine ChartsGPS Location TrackingRoute Planning & Measurement
🗺️ Navigation
(52)
free with in-app purchases
7
OldMapsOnline - History & Maps
OldMapsOnline - History & Maps
OldMapsOnline - History & Maps
Alte Karten und Geschichte
Free

Explore a vast collection of historical maps to visualize how the world has changed. Overlay old maps with modern views, use an interactive timeline, and access integrated historical information. Contribute to a growing community database of cartographic history.

Vast collection of historical mapsInteractive map with timelineOverlay and compare maps
📚 Education
(22)
free with in-app purchases
8
LandMap Property Line Finder
LandMap Property Line Finder
LandMap Property Line Finder
2026 Land Owner & Parcel Map
Free

Access detailed land parcel information, including property lines, owner contact details, and value. This tool helps users find similar properties, measure land areas, and create offline maps for convenient access to land data across the US.

Property line finderLand owner contact detailsFind similar properties
🗺️ Navigation
(3K)
free with in-app purchases
9
GPS OS Grid Reference
GPS OS Grid Reference
GPS OS Grid Reference
Great Britain and Ireland
Free

This app accurately pinpoints your location on Ordnance Survey maps for Great Britain and Ireland, even without a phone signal. It offers precise grid references, waypoint creation, and navigation features. The display is designed for clarity in all lighting conditions, and it optimizes battery usage.

Offline map locationAccurate grid referencesWaypoint creation and management
🗺️ Navigation
(17)
free with in-app purchases
10
Visorando Walking Routes
Visorando Walking Routes
Visorando Walking Routes
Outdoor GPS working offline
Free

Discover curated outdoor routes for hiking and cycling, and use your smartphone as an offline GPS. Track your progress, record your own paths, and access detailed route information even without an internet connection.

Offline GPS navigationCurated route discoveryRoute recording and sharing
✈️ Travel
(67)
freemium
11
London Maps Offline
London Maps Offline
London Maps Offline
Offline OS maps viewer
Free

Navigate London with detailed offline maps from Ordnance Survey. Find places, roads, and points of interest without a data connection. Includes online access to Apple Maps with 3D buildings and user location tracking.

Detailed offline Ordnance Survey mapsOffline search for places and roadsOnline Apple Maps (Standard, Satellite, Hybrid)
🗺️ Navigation
(4)
free
12
Memory-Map for All
Memory-Map for All
Memory-Map for All
Offline Mapping GPS Navigation
Free

Navigate anywhere with offline maps and GPS. Access a vast library of global maps, plan routes, and track your journey without a mobile data connection. Sync data across devices for seamless planning and navigation.

Offline GPS navigationDownloadable global mapsRoute planning and editing
🗺️ Navigation
(10)
free with in-app purchases
13
Outside Maps
Outside Maps
Outside Maps
by Replicade Ltd.
Free

View and navigate diverse mapping data on your iPhone or iPad. Access Ordnance Survey maps for Great Britain, worldwide OpenStreetMap, historic maps, and aerial imagery. Features include GPS tracking, compass, and waypoint management.

View Ordnance Survey maps (Great Britain)Worldwide OpenStreetMap supportHistoric Ordnance Survey maps
🗺️ Navigation
(2)
paid
14
Tomstrails GPS Duo
Tomstrails GPS Duo
Tomstrails GPS Duo
Worldwide Coordinate Formats
Free

This app displays your location using various global coordinate systems, including British, Irish, MGRS, and UTM grids, as well as latitude and longitude. It features an optimized battery life for extended use and a high-contrast display for readability in all conditions.

Multiple grid formats (British, Irish, MGRS, UTM)Latitude & Longitude displayOptimized battery life
🗺️ Navigation
(136)
free
15
Altimeter ∞ Elevation GPS
Altimeter ∞ Elevation GPS
Altimeter ∞ Elevation GPS
Current Altitude Tracker
Free

This app provides real-time GPS elevation tracking for your current location. It's ideal for outdoor activities, travel, or simply satisfying your curiosity about altitude. The app is designed for simplicity and accuracy, working offline with minimal battery consumption.

Current altitude displayGPS accuracy indicatorClean, easy-to-read interface
🔧 Utilities
(930)
free with in-app purchases
16
OutDoors GB - Offline OS Maps
OutDoors GB - Offline OS Maps
OutDoors GB - Offline OS Maps
GPS includes 15 National Parks
$1.99

Navigate the British countryside with confidence using detailed offline maps. Plan, record, and share routes, discover points of interest, and track your journey with powerful GPS features. Ideal for hikers, cyclists, and outdoor enthusiasts.

Offline Ordnance Survey mapsRoute planning and recordingGPS tracking with statistics
🗺️ Navigation
(14)
free with in-app purchases
17
GPS Diagnostic: Satellite Test
GPS Diagnostic: Satellite Test
GPS Diagnostic: Satellite Test
Precise Coordinates & Altitude
$2.99

This app tests your device's GPS module, providing precise navigation parameters and diagnosing location issues. It supports multiple satellite systems and offers advanced coordinate conversions through an in-app purchase.

Test GPS moduleFast GPS lock timePrecise navigation parameters
🗺️ Navigation
(546)
free with in-app purchases
18
OMN - Outdoor Map Navigator
OMN - Outdoor Map Navigator
OMN - Outdoor Map Navigator
Offline OS Maps for walking.
Free

Navigate Great Britain with offline Ordnance Survey maps and real-time GPS tracking. Plan, record, and sync routes across multiple devices and platforms. Access high-definition maps and detailed route editing tools for your outdoor adventures.

Offline Ordnance Survey mapsReal-time GPS trackingRoute plotting and editing
🗺️ Navigation
(2)
free with in-app purchases
19
GPS Fields Area Measure on Map
GPS Fields Area Measure on Map
GPS Fields Area Measure on Map
Calculate Land Size & Distance
Free

Easily measure land areas and distances using GPS technology. Calculate plot sizes, save favorite locations, and convert measurements between various units. Ideal for professionals, outdoor enthusiasts, and farmers.

Measure land areaMeasure distance between pointsSave favorite locations (POIs)
🔧 Utilities
(30)
free
20
OS Explorer Flashcards
OS Explorer Flashcards
OS Explorer Flashcards
Learn OS Explorer map symbols
Free

Learn Ordnance Survey map symbols with this free flashcard app. Test your knowledge of symbols used on OS Explorer maps, ideal for beginners in map reading. All images are © Ordnance Survey Limited.

Learn OS map symbolsFlashcard formatTest map knowledge
📚 Education
(0)
free

FAQ about Ordnance Survey App

What is the best ordnance survey app for iPhone?
OS Maps: Walk, Hike, Run, Bike tops our ordnance survey app ranking as of June 2026, with a 4.7-star average from 440 App Store ratings, and it's free to download.
Yes — 17 of the top ordnance survey app we rank are free to download, including OS Maps: Walk, Hike, Run, Bike and AllTrails: Hike, Bike & Run.
OS Maps: Walk, Hike, Run, Bike has no ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 48+ ordnance survey app on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
OS Maps is a navigation app designed for outdoor activities like hiking, biking, and running. It provides detailed maps, GPS tracking, route planning, and safety features to help users explore trails and stay informed.
Key features include detailed topographic and aerial maps, offline map downloads, GPS live tracking with off-course alerts, activity recording and history, community alerts for trail conditions, and route planning with automatic 'snap-to-path'.