Hillwalking 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.

Coming soon 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 for the whole day on the hill

Plan the route, navigate it with confidence, record what you walked, and review it back home, all in one focused tool.

1345 m

Altitude · live

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

01 · Navigate

Detailed offline maps that don't quit on the summit

Download high-detail topographic maps and navigate with no signal and no data. Your position, the contour lines and every path stay right there in your pocket.

Live British National Grid references as you move.
Off-route alerts the moment you stray from the line.
Fully offline. Safety-critical nav shouldn't need a connection.

36.16 km

↑ 1469 m ascent

02 · Plan

Study the route before you commit to the ridge

See the line on the map, read the full elevation profile, and get a section-by-section briefing of the ground ahead, so there are no surprises above the cloud base.

Elevation profile with distance, ascent and high point.
Terrain grade & path clarity called out per section.
Summits and water crossings identified automatically.

6376 km

751 tracks recorded

03 · Record

Record every walk, review it back home

Track in the background with the screen off. Come home to full stats, an elevation replay and a tidy log of everywhere you've been, then export any of it as standard GPX.

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.

27 km/h

Gusts · summit

Mountain weather for Ben Nevis showing temperature, wind, gusts, precipitation chance and a multi-day forecast

04 · Check

Mountain weather, by the summit that matters

Forecasts pinned to the peak you're heading for, not the town in the valley. Read the wind, gusts and precipitation before you decide whether the ridge is on.

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

Your hills, your map

Switch map styles to suit the terrain and the light. Every style works fully offline once it's downloaded.

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

Thunderforest Landscape map style — Thunderforest Landscape

Satellite aerial imagery of mountainous terrain — Satellite

05 · Plot

Plot a route, and let it snap to the path

Tap out a line by hand, or switch on Smart snapping to lock it onto real paths and tracks. Distance, ascent and estimated time update as you build it, then save the route and follow it on the hill.

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.

The Plot A Route screen: a multi-point route snapped to paths across a topographic map, with live distance, ascent, estimated time and point count

The details that matter on the hill

Small things, done properly, because navigation is made of small things.

Grid references

Live British National Grid readout as you move, so you can call it in without doing the maths.

Geotagged photos

Photos pinned to exactly where you took them and marked on the map.

Elevation replay

Scrub the elevation profile of any recorded track and relive the climb.

Live stats

Time, distance, speed, ascent and GPS altitude, in big glanceable numbers.

GPX import & export

Standard GPX in and out. Your routes and tracks are yours to keep.

Why Grid90

Made for people who miss simple, reliable navigation

When a much-loved navigation app shut down in 2022, a lot of walkers lost the tool they trusted on the hill. Grid90 was built to bring that back: the offline reliability, the dependable guidance, and mapping you can trust, without forcing you onto a subscription you never wanted.

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 on the hill.

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.