# SeaNav vs Aisea

The clearest difference is review sentiment: SeaNav at 55% against Aisea's 14%. Aisea's advantage is in-app purchases (none vs 18). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SeaNav sells 18 in-app purchases, starting at $4.99 per year. Aisea asks for nothing beyond the download.

SeaNav ships an update every 3 weeks, Aisea every 5 weeks. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SeaNav | Aisea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (247 ratings)](https://appshunter.io/ios/app/seanav/id857841271/reviews)** | — |
| Number of ratings | **247** | — |
| Positive reviews | **54.7% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 159 MB | 86 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pocket Mariner Ltd.](https://appshunter.io/developer/719592131) | [Aidea Inc.](https://appshunter.io/developer/1454632788) |

## What reviewers say

### SeaNav

[App page](https://appshunter.io/ios/app/seanav/id857841271)

This app provides high-resolution marine charts, route planning, and real-time navigation for boaters. It offers features like AIS ship tracking, tide and weather information, and offline chart access. Advanced capabilities include augmented reality views and autopilot integration.

**Highlights:** High-resolution marine charts, Autoroute planning, Real-time GPS navigation, AIS ship tracking, Tides and weather, Offline chart access, Augmented Reality View

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weather charts | $4.99 | per year |
| New Zealand Charts | $5.99 | per year |
| NOAA US Raster Charts | $9.99 | per year |
| US Charts | $9.99 | per month |
| Pro Features | $10.49 | per year |
| Bermuda and BVI Charts | $12.99 | per year |
| Italy, Sardinia and Sicily | $17.99 | per year |
| Norwegian Charts | $18.49 | per year |
| US Charts | $19.99 | per year |
| Portuguese Charts | $19.99 | per year |
| BE & NL Charts | $20.99 | per year |
| Spanish Charts | $24.99 | per year |
| UK & IE Charts | $24.99 | per year |
| French Charts | $24.99 | per year |
| Canadian Charts | $26.99 | per year |
| Croatian Charts | $28.49 | per year |
| Man Overboard & Anchor Watch | $4.99 | one-time |
| Pro Features | $14.99 | one-time |

**What reviewers like**

- 👍 Easy to use and great price
- 👍 Much easier to use than competitors
- 👍 UKHO Charts at a reasonable price
- 👍 Intuitive interface, clear and uncluttered
- 👍 Supports NMEA data integration

**What reviewers complain about**

- 🐛 Frozen/locked app
- 💰 Neil and dime for everything
- ❌ Not picking up vessels or ship traffic
- ❌ Charts not good, weather not working
- ❌ Difficult to download and update charts

**Reported bugs**

- Frozen/locked app
- Not picking up vessels or ship traffic
- App does not open
- Crashes after crashes
- Sailing mode crash

**Requested features**

- Can you see water depth on Apple Watch?
- Download all purchased charts button
- Update all purchased charts button
- Legend for symbols and colors
- Brief chart reading explainer


### Aisea

[App page](https://appshunter.io/ios/app/aisea-sailing-support-app/id1454632789)

This navigation app enhances maritime safety by displaying nearby vessel movements and potential collision risks. It also allows users to report hazards, review past voyages, and manage fleets. Communicate with nearby users directly through the app.

**Highlights:** AIS vessel tracking and collision alerts, Map editor for reporting hazards, Voyage playback and analysis, Fleet management tools, In-app Push-To-Talk communication

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SeaNav free?

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

### Is Aisea free?

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

### Do SeaNav or Aisea have ads?

Neither SeaNav nor Aisea shows ads.

### Which is updated more often, SeaNav or Aisea?

SeaNav ships an update every 3 weeks, and Aisea every 5 weeks. Most recently, SeaNav was updated on October 14, 2026 and Aisea on October 15, 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.*