# Doyle Guides vs PyNav

The clearest difference is review sentiment: PyNav at 100% against Doyle Guides's 60%. PyNav also leads on iOS requirement (13.4 vs 16.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Doyle Guides sells 18 in-app purchases, starting at $9.99 per month and PyNav sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Doyle Guides ships an update monthly, PyNav every 5 weeks. The most recent releases landed on September 8, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Doyle Guides | PyNav |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (50 ratings)](https://appshunter.io/ios/app/doyle-guides/id6466621237/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 41 MB | 14 MB |
| Requires iOS | 16.6 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chris Doyle Publishing Limited](https://appshunter.io/developer/1707528206) | [CL Consulting](https://appshunter.io/developer/6779253059) |

## What reviewers say

### Doyle Guides

[App page](https://appshunter.io/ios/app/doyle-guides/id6466621237)

Access comprehensive sailing guides for the southern Caribbean, featuring nautical charts, regulations, services, and points of interest. The app offers an interactive map with user-generated comments and corrections, all free to use. In-app purchases provide access to detailed guide book content.

**Highlights:** Comprehensive sailing guides, Nautical charts and navigation, Interactive satellite map, 3000+ points of interest database, User comments and corrections, Island-specific content bundles

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trinidad & Tobago - 1 month | $9.99 | per month |
| Martinique Sailing Guide | $19.99 | per month |
| St. Lucia Sailing Guide | $19.99 | per month |
| St. Vincent Sailing Guide | $19.99 | per month |
| Grenada Package - 1 month | $19.99 | per month |
| Trinidad Tobago Sailing Guide | $19.99 | per year |
| Martinique Sailing Guide | $24.99 | per year |
| St. Lucia Sailing Guide | $24.99 | per year |
| St. Vincent Sailing Guide | $24.99 | per year |
| Grenada Package - 12 months | $24.99 | per year |
| Southern Leeward Sailing Guide | $24.99 | per month |
| Northern Leeward Sailing Guide | $24.99 | per month |
| Windward Islands Guide | $29.99 | per month |
| BVI Cruising Guide | $29.99 | per year |
| Windward Islands Guide | $39.99 | per year |
| Virgin Islands Cruising Guide | $39.99 | per year |
| Leeward Islands Sailing Guide | $39.99 | per month |
| Leeward Islands Sailing Guide | $59.99 | per year |


### PyNav

[App page](https://appshunter.io/ios/app/pynav/id6779253057)

This app provides NMEA instrument data and remote control for a pypilot autopilot. It can function as a standalone navigation hub, displaying wind, engine, and GPS data with customizable panels and configurable alarms.

**Highlights:** Pypilot autopilot control, NMEA instrument display, Customizable dashboard panels, Wind and engine data, GPS and waypoint navigation, Configurable alarms

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PyNav Pro | $7.99 | one-time |


## Frequently asked questions

### Is Doyle Guides free?

Doyle Guides is free to download, with in-app purchases available.

### Is PyNav free?

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

### Do Doyle Guides or PyNav have ads?

Neither Doyle Guides nor PyNav shows ads.

### Which is updated more often, Doyle Guides or PyNav?

Doyle Guides ships an update monthly, and PyNav every 5 weeks. Most recently, Doyle Guides was updated on September 8, 2026 and PyNav on September 7, 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.*