GB Grid Converter vs Coordinate Converter.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GB Grid Converter
This app converts British National Grid References to Latitude/Longitude coordinates and vice-versa. It supports both OSGB36 and WGS84 datums. You can view converted coordinates in Maps, send them to other apps, or copy them to your clipboard.
- Convert British National Grid to Lat/Long
- Convert Lat/Long to British National Grid
- Supports OSGB36 and WGS84
- View coordinates in Maps app
- Send coordinates to other apps
- Copy coordinates to clipboard
- Fuzzy parsing for input
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Easily convert between British National Grid References (OS Grid Refs) and Latitude, Longitude coordinates (both OSGB36 and WGS84 are supplied). Then, easily view the converted coordinate in the Maps app, or send it to GPS Log (our app for recording your travels). Or copy to the clipboard using the standard iPhone functions. Fuzzy parsing logic allows you to input coordinates in a variety of ways, like "TQ 30267 76930", and "TQ302769". If you have any problems using this software, please contact us by email: support-at-gpslog.com so we can work with you to solve the problem. Issues left as reviews are difficult to address.
Coordinate Converter.
Easily convert coordinates between over 3800 systems and datums, including common formats like UTM and MGRS, as well as more specialized grids. View results on a map and export them to various messaging and sharing apps.
- Over 3800 coordinate systems/datums
- Converts UTM, MGRS, WGS84, and exotic systems
- Input/output formatting (D, DM, DMS)
- Results visible on OpenStreetMap
- Export converted coordinates to messaging apps
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Convert coordinates between 3800+ coordinate systems and datums — from common systems like UTM, MGRS and WGS84 to regional ones like Dominica 1945 / British West Indies Grid, Katanga 1955 / Katanga Lambert or NAD83 / Oklahoma South. Features: • Over 3800 coordinate systems/datums • Input and output in D, DM or DMS format where applicable • View the converted coordinate on OpenStreetMap (requires internet) • Export via WhatsApp, X, Email, SMS, or copy to clipboard
Screenshots
Verdict
The clearest difference is review sentiment: GB Grid Converter at 76% against Coordinate Converter.'s 0%. GB Grid Converter also leads on price (Free vs $2.99) and update cadence (every 2 months vs every 20 months). Coordinate Converter.'s advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
GB Grid Converter is free to download; Coordinate Converter. costs $2.99 up front. GB Grid Converter sells 1 one-off in-app purchase. Coordinate Converter. asks for nothing beyond the download.
GB Grid Converter ships an update every 2 months, Coordinate Converter. every 20 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | GB Grid Converter | Coordinate Converter. |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 75.9% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months — better | Every 20 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 10 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Geospike Pty Ltd | JW Rijkes |
Customer experience
GB Grid Converter
Coordinate Converter.
Bugs and requests
GB Grid Converter
Reported bugs
6 issues- Drop pin does not give TQ anymore unless at location
- No sound when driving to a grid reference
- App crashes when asking for directions on iPad mini
- Latest update has issues, doesn't work on iPhone or iPad
- New marker pins on map not accurate, same grid ref for all pins
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- App is deficient due to Apple's default map
Requested features
4 requests- Direct reference to What 3 Words
- Watch compatibility
- Convert WGS84 to OS grid
- Increase accuracy by another decimal place
Coordinate Converter.
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GB Grid Converter
- GB Grid Converter Premium$10.00
Coordinate Converter.
No in-app purchases
Questions
Is GB Grid Converter free?
Is Coordinate Converter. free?
Do GB Grid Converter or Coordinate Converter. have ads?
Which is updated more often, GB Grid Converter or Coordinate Converter.?
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