# WRI Dolphin vs TerraWatch

The clearest difference is in-app purchases: WRI Dolphin at none against TerraWatch's 1. WRI Dolphin also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). TerraWatch's advantage is update cadence (every 5 days vs fortnightly). On price and ads there is nothing between them.

Both are free to download. TerraWatch sells 1 one-off in-app purchase. WRI Dolphin asks for nothing beyond the download.

WRI Dolphin ships an update fortnightly, TerraWatch every 5 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | WRI Dolphin | TerraWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wri-dolphin/id6744825292/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | — |
| Size | 15 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Weather Routing Inc.](https://appshunter.io/developer/1486427449) | [Tolga Ulutas](https://appshunter.io/developer/1867266654) |

## What reviewers say

### WRI Dolphin

[App page](https://appshunter.io/ios/app/wri-dolphin/id6744825292)

Access global weather and routing data for maritime professionals. Features include detailed forecasts for wind, waves, currents, and precipitation, along with vessel tracking and severe weather alerts. Stay informed with real-time updates and push notifications for maritime hazards.

**Highlights:** 3 Hourly Global Forecast Data, Wind, Wave, and Current Forecasts, Radar and Lightning Data, Vessel Tracking, Heavy Weather Alerts, Port Forecasts, Push Notifications

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

**In-app purchases:** none


### TerraWatch

[App page](https://appshunter.io/ios/app/terrawatch/id6762412658)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TerraWatch Pro | $2.99 | one-time |


## Frequently asked questions

### Is WRI Dolphin free?

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

### Is TerraWatch free?

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

### Do WRI Dolphin or TerraWatch have ads?

Neither WRI Dolphin nor TerraWatch shows ads.

### Which is updated more often, WRI Dolphin or TerraWatch?

WRI Dolphin ships an update fortnightly, and TerraWatch every 5 days. Most recently, WRI Dolphin was updated on October 9, 2026 and TerraWatch on October 8, 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.*