# GB Grid Converter vs Coordinate Converter.

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.

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.

## The numbers

| Metric | GB Grid Converter | Coordinate Converter. |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gb-grid-converter/id382369923/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **75.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 20 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 10 MB | 26 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Geospike Pty Ltd](https://appshunter.io/developer/500622151) | [JW Rijkes](https://appshunter.io/developer/567970964) |

## What reviewers say

### GB Grid Converter

[App page](https://appshunter.io/ios/app/gb-grid-converter/id382369923)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GB Grid Converter Premium | $10.00 | one-time |

**What reviewers like**

- 👍 Brilliant app overall
- 📍 Accurate grid references
- 🗺️ Shows location on map
- 🚀 Navigates to grid reference
- 💡 Instant and accurate grid reference

**What reviewers complain about**

- 🐛 Drop pin no longer gives TQ
- 🔊 No sound when driving
- 📉 Accuracy issues (can't get to 5m)
- 🐛 Clunky and inaccurate interface
- 💥 Crashes iPad Air

**Reported bugs**

- 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

**Requested features**

- Direct reference to What 3 Words
- Watch compatibility
- Convert WGS84 to OS grid
- Increase accuracy by another decimal place


### Coordinate Converter.

[App page](https://appshunter.io/ios/app/coordinate-converter/id1065074340)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GB Grid Converter free?

GB Grid Converter is free to download, with in-app purchases available.

### Is Coordinate Converter. free?

Coordinate Converter. costs $2.99, with no in-app purchases.

### Do GB Grid Converter or Coordinate Converter. have ads?

Neither GB Grid Converter nor Coordinate Converter. shows ads.

### Which is updated more often, GB Grid Converter or Coordinate Converter.?

GB Grid Converter ships an update every 2 months, and Coordinate Converter. every 20 months. Most recently, GB Grid Converter was updated on November 1, 2026 and Coordinate Converter. on November 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*