# NVS Explorer vs Anchor Pro

The clearest difference is rating: Anchor Pro at 4.8 against NVS Explorer's 4.3. Anchor Pro also leads on ratings volume (3.5K vs 3) and review sentiment (80% vs 60%). NVS Explorer's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Anchor Pro sells 1 in-app purchase, starting at $6.99 per year. NVS Explorer asks for nothing beyond the download.

Anchor Pro holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Anchor Pro has 3.5K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of NVS Explorer's written reviews are positive against 80% of Anchor Pro's.

NVS Explorer ships an update every 3 months, Anchor Pro every 2 months. The most recent releases landed on June 11, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | NVS Explorer | Anchor Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/nvs-explorer/id373563865/reviews) | **[4.8 (3.5K ratings)](https://appshunter.io/ios/app/anchor-pro/id1445476850/reviews)** |
| Number of ratings | 3 | **3.5K** |
| Positive reviews | 60.0% of reviews | **79.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 23 MB |
| Requires iOS | **12.0** | 17.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [NANOOS-IOOSASSOCIATION](https://appshunter.io/developer/1792959921) | [IdeaBoys GmbH](https://appshunter.io/developer/1578331665) |

## What reviewers say

### NVS Explorer

[App page](https://appshunter.io/ios/app/nvs-explorer/id373563865)

Access real-time ocean data for the Pacific Northwest. Visualize conditions from various observing assets, view historical data plots, and share findings via email or SMS. Customize units and save favorite assets for quick access.

**Highlights:** View real-time ocean data, Access 24-hour, 7-day, and 30-day data plots, Share data plots via email or SMS, Searchable list of observing assets, Save favorite observing assets, Display data in scientific or common units, Data plots for tuna fishers

**Features:** macOS Compatibility

**In-app purchases:** none


### Anchor Pro

[App page](https://appshunter.io/ios/app/anchor-pro/id1445476850)

This app helps boaters set and monitor their anchor position in real-time. It allows for defining safe zones, tracking boat movement, and receiving alerts for critical changes. Remote notifications and Apple Watch integration enhance its utility for secure anchoring.

**Highlights:** Set anchor location in real-time or manually, Define custom safe swing zones, Monitor boat movement and track history, Receive real-time alerts for position, GPS, and battery, Remote notifications via Telegram or email, Apple Watch companion app for key metrics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Anchor Premium | $6.99 | per year |

**What reviewers like**

- 🚀 Reliable anchor alarm
- 👍 Easy to use interface
- 🔒 Works without cell/WiFi
- 💤 Helps user sleep soundly
- 🗺️ Detailed anchor tracking

**What reviewers complain about**

- 🐛 GPS accuracy issues
- 🔋 Drains device battery
- 🔍 Remote monitoring unreliable
- 💰 Subscription required for full features

**Reported bugs**

- App randomly shuts off
- Anchor position tracking glitches

**Requested features**

- Customizable anchor icon/color
- Integration with marine GPS/chartplotter
- Ability to adjust alarm parameters remotely


## Frequently asked questions

### Is NVS Explorer free?

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

### Is Anchor Pro free?

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

### Which has better reviews, NVS Explorer or Anchor Pro?

Anchor Pro is rated higher. NVS Explorer averages 4.3 out of 5 from 3 ratings, while Anchor Pro averages 4.8 from 3.5K ratings.

### Do NVS Explorer or Anchor Pro have ads?

Neither NVS Explorer nor Anchor Pro shows ads.

### Which is updated more often, NVS Explorer or Anchor Pro?

NVS Explorer ships an update every 3 months, and Anchor Pro every 2 months. Most recently, NVS Explorer was updated on June 11, 2026 and Anchor Pro on September 29, 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.*