# NavRules vs AV Assistant

The clearest difference is price: AV Assistant at Free against NavRules's $15.99. AV Assistant also leads on rating (5.0 vs 3.9) and update cadence (every 2 months vs every 13 months). NavRules's advantage is chart position (#18 vs unranked) and ratings volume (19 vs 4). On ads, in-app purchases and device support there is nothing between them.

AV Assistant is free to download; NavRules costs $15.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AV Assistant holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 19 and 4 respectively.

NavRules ships an update every 13 months, AV Assistant every 2 months. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | NavRules | AV Assistant |
| --- | --- | --- |
| Price | $15.99 | **Free** |
| Rating | [3.9 (19 ratings)](https://appshunter.io/ios/app/navrules/id423125556/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/av-assistant/id1381484046/reviews)** |
| Number of ratings | **19** | 4 |
| Positive reviews | 68.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Best chart rank | **#18** | — |
| Size | 17 MB | 5 MB |
| Requires iOS | **8.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mintaka Innovations](https://appshunter.io/developer/1207417949) | [Clint O'Connor](https://appshunter.io/developer/1381484045) |

## What reviewers say

### NavRules

[App page](https://appshunter.io/ios/app/navrules/id423125556)

**Currently charting:** #18 Top Paid · Navigation (US App Store)

Master nautical navigation rules with practice exams and a comprehensive rule book. Focus your learning by customizing tests based on question type, rule, and filter. Track your progress and review answers with detailed explanations.

**Highlights:** Customizable practice exams, International and US Inland rules, Question filtering by text or rule, Progress tracking by rule, Flash card mode with diagrams, Integrated Rule Book, Over 1200 questions

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

**In-app purchases:** none


### AV Assistant

[App page](https://appshunter.io/ios/app/av-assistant/id1381484046)

This app provides U.S. waters navigation information, displaying your location and details of surrounding aids like buoys and lights. It downloads weekly U.S. Coast Guard Light List data and includes relevant Local Notice for Mariners information. It also allows users to report discrepancies in navigation aids to the U.S. Coast Guard.

**Highlights:** Location-based aid display, U.S. Coast Guard Light List data, Local Notice for Mariners integration, Discrepancy reporting to USCG, Informational aid for U.S. waters

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NavRules free?

NavRules costs $15.99, with no in-app purchases.

### Is AV Assistant free?

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

### Which has better reviews, NavRules or AV Assistant?

AV Assistant is rated higher. NavRules averages 3.9 out of 5 from 19 ratings, while AV Assistant averages 5.0 from 4 ratings.

### Do NavRules or AV Assistant have ads?

Neither NavRules nor AV Assistant shows ads.

### Which is updated more often, NavRules or AV Assistant?

NavRules ships an update every 13 months, and AV Assistant every 2 months. Most recently, NavRules was updated on October 21, 2026 and AV Assistant on October 9, 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.*