Northing is a summit verification app for Britain and Ireland. It ingests GPS activity data from Strava, GPX files, or FIT files and verifies whether you reached the summit of a peak on any of its nine covered lists. Verification uses a 200-metre coordinate tolerance.

Yes. Northing is private by default. There is no social feed, no public profile, and no leaderboard. Data is encrypted in transit and at rest.

NORTHING

VER 1.0 // BRITAIN & IRELAND // SUMMIT VERIFICATION

Download on the App Store Contact Support

[INSTRUMENT] Northing is a summit verification app for Britain and Ireland. It audits raw GPS activity data from Strava, GPX, and FIT files and verifies arrival on nine peak lists. Coordinate tolerance: 200 metres. Private by default. No social feed.

00. How Summit Verification Works

[01 CONNECT]

Link your Strava account or upload a GPX/FIT file from your device. All sources treated equally.

[02 VERIFY]

Northing cross-references your raw GPS coordinates against Ordnance Survey summit positions. Tolerance: 200 metres horizontal. Elevation gain from barometric pressure where available.

[03 RECORD]

Verified summits are logged to your personal ledger. No notifications. No praise. A state change in your record.

01. Verification

[AUDIT] Activity Ingestion. Northing ingests activity data post-hoc from Strava, GPX, or FIT files. Raw coordinate samples and barometric pressure data are retained unsmoothed.
[FIX] Summit Verification. Each activity is cross-referenced against summit coordinates. A summit is marked as verified when a GPS sample falls within 200 metres of the Ordnance Survey position.
[GAIN] Elevation Calculation. Vertical gain is calculated from atmospheric pressure samples, not GPS altitude. This rejects consumer-grade GPS vertical estimation and reduces atmospheric drift error.

02. Operating Rules

[RULE] Agency. Northing does not recommend routes, assess difficulty, or score conditions. The user makes all decisions. The app records the result.
[RULE] Privacy. Private by default. No social feed. No data selling. Encrypted in transit (TLS 1.3) and at rest (AES-256). You own your data.
[RULE] Integrity. No motivational copy in the app. No streaks. No badges. Effort is recorded without editorialisation.

03. Database

282

[MUNROS]

Scottish peaks above 3,000 ft (914.4m). The complete Munro list as maintained by the Scottish Mountaineering Club.

214

[WAINWRIGHTS]

The fells of the English Lake District as catalogued by Alfred Wainwright in his seven Pictorial Guides.

2,009

[MARILYNS]

Hills across Britain, Ireland, and the Isle of Man with a minimum 150-metre topographic prominence.

[ALSO COVERED]

Corbetts: 222
Grahams: 231
Nuttalls: 442
Welsh 3000s: 15
Trail 100: 100
Ethels: 95

Nine lists in total. Lists overlap, so a hill can belong to more than one.

04. Access Tiers

Registry

Free Access

Initial Window

1-month historical synchronisation from first sync baseline

Current Records

Real-time synchronisation for all future ledger entries

05. Download

QR code to download Northing from the App Store

Scan to download

Northing is available on the App Store for iPhone. Registry access is free. Archive requires a subscription (£24.99/year).

https://apps.apple.com/gb/app/northing/id6759167571

iOS 17.0 or later. Britain and Ireland.

06. Scope

[GEOGRAPHY] Great Britain, Northern Ireland, and Ireland. Marilyns also include the Isle of Man.
[PLATFORM] iOS. iPhone only.
[TOLERANCE] Coordinate verification mandates a 200-metre horizontal tolerance of the target summit. Fixed. Not adjustable.
[INPUT] Strava activity sync. GPX file upload. FIT file upload. All sources treated equally.

07. Frequently Asked Questions

What is Northing?

Northing is a summit verification app for Britain and Ireland. It ingests GPS activity data from Strava, GPX, or FIT files and verifies whether you reached the summit of a peak on any of its nine covered lists. Verification tolerance: 200 metres.

Does Northing work with Strava?

Yes. Connect your Strava account and Northing imports your completed activities for summit verification. Post-hoc only — Northing does not track you in real time.

What peak lists are supported?

Nine lists: 282 Munros, 214 Wainwrights, 222 Corbetts, 231 Grahams, 442 Nuttalls, 15 Welsh 3000s, 100 Trail 100, 95 Ethels, and 2,009 Marilyns.

Is Northing private?

Private by default. No social feed. No public profile. No leaderboard. Data encrypted in transit (TLS 1.3) and at rest (AES-256). You own your data.

How much does Northing cost?

Registry is free and verifies summits from sign-up onwards, with a 1-month historical sync window. Archive is £24.99/year and adds unrestricted synchronisation of your existing activity history. Payment via Apple In-App Purchase.

Is Northing a navigation app?

No. Northing does not provide routes, directions, or navigation of any kind. It verifies where you have been, not where you should go. All route decisions are yours.

Why is the verification tolerance 200 metres?

Summit coordinates represent a summit area, not a point. The 200-metre tolerance accounts for GPS accuracy variation and the physical reality that summits are approachable from multiple angles. The tolerance is fixed and not adjustable.

Does Northing cover Ireland?

Yes. Coverage is Great Britain, Northern Ireland, and Ireland. Marilyns also include the Isle of Man.