# SARLOC vs UK Waterways Map

The clearest difference is update cadence: UK Waterways Map at weekly against SARLOC's every 8 months. SARLOC's advantage is iOS requirement (15.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SARLOC ships an update every 8 months, UK Waterways Map weekly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SARLOC | UK Waterways Map |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Free | — |
| Size | 1 MB | 4 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Russell Hore](https://appshunter.io/developer/1456589768) | [Jack Finnis](https://appshunter.io/developer/1633101066) |

## What reviewers say

### 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


### UK Waterways Map

[App page](https://appshunter.io/ios/app/uk-waterways-map/id6738012734)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SARLOC free?

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

### Is UK Waterways Map free?

UK Waterways Map is free to download, with no in-app purchases.

### Do SARLOC or UK Waterways Map have ads?

Neither SARLOC nor UK Waterways Map shows ads.

### Which is updated more often, SARLOC or UK Waterways Map?

SARLOC ships an update every 8 months, and UK Waterways Map weekly. Most recently, SARLOC was updated on November 2, 2026 and UK Waterways Map on October 30, 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.*