# GridPoint GB vs SARLOC

The clearest difference is in-app purchases: SARLOC at none against GridPoint GB's 3. SARLOC also leads on review sentiment (100% vs 72%). GridPoint GB's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. GridPoint GB sells 3 one-off in-app purchases. SARLOC asks for nothing beyond the download.

GridPoint GB ships an update every 16 months, SARLOC every 8 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | GridPoint GB | SARLOC |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 72.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 8 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 23 MB | 1 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [George MacKerron](https://appshunter.io/developer/314445601) | [Russell Hore](https://appshunter.io/developer/1456589768) |

## What reviewers say

### GridPoint GB

[App page](https://appshunter.io/ios/app/gridpoint-gb/id314445598)

Locate yourself on a paper Ordnance Survey map using your iPhone's GPS and compass, even without mobile reception. It provides your grid reference and heading, with accurate coordinate conversions. Features include Apple Watch integration, location sharing, and sunset/sunrise times.

**Highlights:** GPS and compass for location, Accurate coordinate conversions, Apple Watch app and complication, Location sharing, Sunset and sunrise times, Distress signal

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Magnificent tip | $2.99 | one-time |
| Majestic tip | $4.99 | one-time |
| Monumental tip | $8.99 | one-time |


### SARLOC

[App page](https://appshunter.io/ios/app/sarloc/id1456589769)

This app helps you share your location with Search and Rescue teams, even without a data signal. If you have voice contact, you can relay your position. With a SARKey, you can directly share your location to their mapping systems.

**Highlights:** Location sharing without data signal, Voice communication relay, SARKey integration, Direct mapping system sharing, Offline location display

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GridPoint GB free?

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

### Is SARLOC free?

SARLOC is free to download, with no in-app purchases.

### Do GridPoint GB or SARLOC have ads?

Neither GridPoint GB nor SARLOC shows ads.

### Which is updated more often, GridPoint GB or SARLOC?

GridPoint GB ships an update every 16 months, and SARLOC every 8 months. Most recently, GridPoint GB was updated on October 17, 2026 and SARLOC on October 11, 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.*