# River Thames Guide vs CHIRP

The clearest difference is iOS requirement: CHIRP at 13.0 against River Thames Guide's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

River Thames Guide ships an update every 6 weeks, CHIRP monthly. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | River Thames Guide | CHIRP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/river-thames-guide/id617269104/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | — |
| Size | 294 MB | 19 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Maynard](https://appshunter.io/developer/320977741) | [THE SURGERY DESIGN & DIGITAL LTD](https://appshunter.io/developer/963204000) |

## What reviewers say

### River Thames Guide

[App page](https://appshunter.io/ios/app/river-thames-guide/id617269104)

This comprehensive guide and planner helps you navigate and explore the River Thames and Wey Navigation. It offers an offline interactive map, a journey planner with distance and lock information, and details on bridges, weather, and river conditions.

**Highlights:** Interactive offline river map, Journey planner with distance and lock counts, Detailed lock and bridge information, Current river conditions and weather forecasts, Boating advice and emergency guidance

**Features:** Vision Pro support

**In-app purchases:** none


### CHIRP

[App page](https://appshunter.io/ios/app/chirp/id1624936054)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is River Thames Guide free?

River Thames Guide is free to download, with no in-app purchases.

### Is CHIRP free?

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

### Do River Thames Guide or CHIRP have ads?

Neither River Thames Guide nor CHIRP shows ads.

### Which is updated more often, River Thames Guide or CHIRP?

River Thames Guide ships an update every 6 weeks, and CHIRP monthly. Most recently, River Thames Guide was updated on October 23, 2026 and CHIRP on October 25, 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.*