# Coordinates vs SeaNav US

The clearest difference is price: Coordinates at $0.99 against SeaNav US's $19.99. Coordinates also leads on in-app purchases (none vs 7) and review sentiment (60% vs 48%). SeaNav US's advantage is rating (4.3 vs 3.3) and ratings volume (100 vs 4). On update cadence and ads there is nothing between them.

Coordinates costs $0.99 and SeaNav US $19.99 up front. SeaNav US sells 7 in-app purchases, starting at $7.49 per year. Coordinates asks for nothing beyond the download.

SeaNav US holds the better App Store score, 4.3 against 3.3. That said, the two scores are not equally well evidenced: SeaNav US has 100 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 60% of Coordinates's written reviews are positive against 48% of SeaNav US's, so the app with the better star average is not the one people write more warmly about.

Coordinates ships an update every 6 months, SeaNav US every 4 months. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Coordinates | SeaNav US |
| --- | --- | --- |
| Price | **$0.99** | $19.99 |
| Rating | [3.3 (4 ratings)](https://appshunter.io/ios/app/coordinates/id328710005/reviews) | **[4.3 (100 ratings)](https://appshunter.io/ios/app/seanav-us/id632635827/reviews)** |
| Number of ratings | 4 | **100** |
| Positive reviews | **60.0% of reviews** | 48.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#193** |
| Size | 10 MB | 76 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hunt Mountain Software](https://appshunter.io/developer/328710008) | [Pocket Mariner Ltd.](https://appshunter.io/developer/719592131) |

## What reviewers say

### Coordinates

[App page](https://appshunter.io/ios/app/coordinates/id328710005)

Easily convert between decimal degrees, degrees/decimal minutes, degrees-minutes-seconds, and UTM coordinates. Locate yourself with GPS, view your precision, and share your location. Save and export waypoints for your adventures.

**Highlights:** Multiple coordinate format conversion, GPS location finding, Current GPS precision display, Copy/send location, Show location on map, Waypoint list and export

**Features:** Vision Pro support

**In-app purchases:** none


### SeaNav US

[App page](https://appshunter.io/ios/app/seanav-us/id632635827)

**Currently charting:** #193 Top Paid · Navigation (US App Store)

Navigate boating trips with high-resolution NOAA marine charts for the USA and Great Lakes. Features include live AIS, augmented reality views, route planning, and offline chart access. Integrates with ActiveCaptain and external devices.

**Highlights:** High-resolution NOAA marine charts, Live AIS ship targets and collision alerts, Augmented Reality camera view, Route planning and tracking, Offline charts, ActiveCaptain integration

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weather charts | $7.49 | per year |
| NOAA US Raster charts | $9.99 | per year |
| Bermuda and BVI Charts | $12.99 | per year |
| UK Charts | $13.99 | per year |
| US Chart Updates | $19.99 | per year |
| Canada Charts | $29.99 | per year |
| Man Overboard & Anchor Watch | $4.99 | one-time |


## Frequently asked questions

### Is Coordinates free?

Coordinates costs $0.99, with no in-app purchases.

### Is SeaNav US free?

SeaNav US costs $19.99, and also offers in-app purchases.

### Which has better reviews, Coordinates or SeaNav US?

SeaNav US is rated higher. Coordinates averages 3.3 out of 5 from 4 ratings, while SeaNav US averages 4.3 from 100 ratings.

### Do Coordinates or SeaNav US have ads?

Neither Coordinates nor SeaNav US shows ads.

### Which is updated more often, Coordinates or SeaNav US?

Coordinates ships an update every 6 months, and SeaNav US every 4 months. Most recently, Coordinates was updated on October 4, 2026 and SeaNav US on October 12, 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.*