UK Outdoor Navigation · iOS & Android

Precise navigation
for the UK hills.

Map-first and simple - no clutter, no bloat. Detailed offline topographic maps, live grid references and dependable route guidance that keeps working when the signal doesn't. Built by hillwalkers for hillwalkers.

Download on the App Store Get it on Google Play

100% Free during launch

NN 1662 7123Live grid reference

Fully offlineWorks with no signal

Grid90 navigating live on Ben Nevis: a detailed contour map with the route line, position crosshair, grid reference and altitude readout

Everything to explore the great outdoors

Plan routes, navigate with confidence, record your activities, download offline maps, all in one focused tool.

Live navigation on a detailed 1:25k contour map with route line, position crosshair, grid reference and recording controls

01 · Navigate

Detailed topographic maps

Download high-detail topographic maps and navigate with no signal and no data.

Live British National Grid references as you move.
Customisable off-route alerts to help navigate with confidence.
Full offline support. Safety-critical navigation shouldn't need a connection.

02 · Plan

Study the route before you go

See the line on the map, read the full elevation profile and take advantage of OSM contributor data for any special notes.

Elevation profile with distance, ascent and high point.
Terrain grade & path clarity across the route
OSM Contributor notes: view relevant notes around your route.

03 · Record

View recorded activities

Track your activities (hiking, cycling & more) in the background and review them back home.

Background recording with live distance, ascent and speed.
Geotagged photos pinned to exactly where you took them.
GPX import & export. Bring routes in, take your data out.

04 · Check

Mountain weather

Forecasts for most summits & places powered by OpenMeteo using 30+ weather models.

Per-summit forecasts at real mountain elevations.
Wind, gusts and pressure hour by hour.
Precipitation timeline so you know when it hits.

05 · Plot

Plot a route

Plot your own route or import existing GPX files.

Smart snap-to-path locks your line onto real paths and tracks.
Live distance, ascent and time update as you build the route.
Save it and follow it on the hill, fully offline.

Map layers

More coming soon.

Grid90 topographic map style with contour lines and grid squares — Grid90

Thunderforest Landscape map style — Thunderforest Landscape

Satellite aerial imagery of mountainous terrain — Satellite

Why Grid90

Made for people who miss simple, reliable navigation

When ViewRanger shut down in 2022, a lot of walkers lost the tool they trusted on the hill. Grid90 was built with the aim to bring the core features back: offline reliability, dependable guidance, and mapping you can trust, without the clutter.

Works when your phone doesn't have signal. Navigation shouldn't depend on a connection.
Free during launch. Every feature is unlocked right now, offline map downloads included, at no cost.
Built for UK hills. Grid references and mapping that feel familiar.
Made by hillwalkers. Feedback goes straight to the people building it.

See it in action

Real screens from the app. Swipe through.

Live navigation on Ben Nevis with contour map and route line

Mountain weather forecast for a named summit

Live stats screen with time, distance and speed

Recorded track summary with distance, time and ascent

All-time statistics across recorded walks

An honest note

Still early, and shaped by you

Grid90 holds on to the thing the best hill apps used to get right: simplicity. Open the app, see where you are, follow your route. No clutter, no fuss.

We're not going to pretend it's the finished article or the best app out there. We're trying to build something people genuinely love, and it gets better every time someone tells us what's missing. If you give it a go, we'd really like to hear what you think.

Send feedback

Precise navigationfor the UK hills.