# Terrafin Mobile vs Bluewater Forecast

The clearest difference is in-app purchases: Bluewater Forecast at none against Terrafin Mobile's 1. Bluewater Forecast also leads on update cadence (every 4 days vs every 6 weeks) and ratings volume (3 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Terrafin Mobile sells 1 one-off in-app purchase. Bluewater Forecast asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Terrafin Mobile against 5.0 for Bluewater Forecast. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Terrafin Mobile ships an update every 6 weeks, Bluewater Forecast every 4 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Terrafin Mobile | Bluewater Forecast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/terrafin-mobile/id585725567/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/bluewater-forecast/id6806490652/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Subscription | **Freemium** |
| Size | 47 MB | 3 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Terrafin Satellite Imaging](https://appshunter.io/developer/585725770) | [CORY LANE BROWN](https://appshunter.io/developer/6806490654) |

## What reviewers say

### Terrafin Mobile

[App page](https://appshunter.io/ios/app/terrafin-mobile/id585725567)

Access detailed marine data, including sea surface temperature, chlorophyll, and currents, for fishing, diving, and research. Download charts for offline use and track your vessel's location in real-time.

**Highlights:** Offline chart downloads, Real-time vessel tracking, Latitude/Longitude/Temperature readings, Mark waypoints, Distance & Bearing calculations, Sea Surface Temperature charts, Chlorophyll/Ocean Color charts

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Terrafin Membership 12 Months | $119.00 | one-time |


### Bluewater Forecast

[App page](https://appshunter.io/ios/app/bluewater-forecast/id6806490652)

This marine weather app provides detailed forecasts for coastal areas, including wave height, wind, tides, and sea surface temperature. It offers a map-first interface with customizable layers and a one-screen dashboard for saved locations. An optional subscription unlocks advanced features like inshore topography and fishing hotspots.

**Highlights:** Map-based marine weather forecasts, Wave height, period, and direction, Wind and gusts, Tides, water levels, and currents, Radar and cloud imagery, Sea surface temperature, Saved spots with push alerts

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

**In-app purchases:** none


## Frequently asked questions

### Is Terrafin Mobile free?

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

### Is Bluewater Forecast free?

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

### Which has better reviews, Terrafin Mobile or Bluewater Forecast?

Terrafin Mobile and Bluewater Forecast are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Terrafin Mobile or Bluewater Forecast have ads?

Neither Terrafin Mobile nor Bluewater Forecast shows ads.

### Which is updated more often, Terrafin Mobile or Bluewater Forecast?

Terrafin Mobile ships an update every 6 weeks, and Bluewater Forecast every 4 days. Most recently, Terrafin Mobile was updated on November 1, 2026 and Bluewater Forecast on October 31, 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.*