# SeaNav vs SailTimer API™

The clearest difference is review sentiment: SeaNav at 55% against SailTimer API™'s 0%. SeaNav also leads on ratings volume (247 vs 1) and device support (4 vs 2). SailTimer API™'s advantage is rating (5.0 vs 4.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SeaNav sells 18 in-app purchases, starting at $4.99 per year and SailTimer API™ sells 6 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

SailTimer API™ holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: SeaNav has 247 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 55% of SeaNav's written reviews are positive against 0% of SailTimer API™'s, so the app with the better star average is not the one people write more warmly about.

SeaNav ships an update every 3 weeks, SailTimer API™ every 4 weeks. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SeaNav | SailTimer API™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (247 ratings)](https://appshunter.io/ios/app/seanav/id857841271/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sailtimer-api/id1562869275/reviews)** |
| Number of ratings | **247** | 1 |
| Positive reviews | **54.7% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 159 MB | 19 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pocket Mariner Ltd.](https://appshunter.io/developer/719592131) | [SailTimer Inc.](https://appshunter.io/developer/326309854) |

## 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


### SailTimer API™

[App page](https://appshunter.io/ios/app/sailtimer-api/id1562869275)

This app bridges the gap between your SailTimer Wind Instrument and other navigation or performance apps. It also offers access to crowdsourced wind maps and marine weather animations through a subscription, enhancing your sailing experience with real-time wind data.

**Highlights:** Integrates with SailTimer Wind Instrument, Delivers wind data to partner apps, Crowdsourced wind maps, Marine weather animations, Supports chartplotter apps, Real-time wind data

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crowdsourced Wind Maps - Monthly | $2.99 | per month |
| WNI Marine Weather - Monthly | $2.99 | per month |
| AI Forecasts - Monthly | $2.99 | per month |
| Crowdsourced Wind Maps - Yearly | $19.99 | per year |
| WNI Marine Weather - Yearly | $19.99 | per year |
| AI Forecasts - Yearly | $19.99 | per year |


## Frequently asked questions

### Is SeaNav free?

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

### Is SailTimer API™ free?

SailTimer API™ is free to download, with in-app purchases available.

### Which has better reviews, SeaNav or SailTimer API™?

SailTimer API™ is rated higher. SeaNav averages 4.4 out of 5 from 247 ratings, while SailTimer API™ averages 5.0 from 1 ratings.

### Do SeaNav or SailTimer API™ have ads?

Neither SeaNav nor SailTimer API™ shows ads.

### Which is updated more often, SeaNav or SailTimer API™?

SeaNav ships an update every 3 weeks, and SailTimer API™ every 4 weeks. Most recently, SeaNav was updated on October 10, 2026 and SailTimer API™ on October 1, 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.*