# GPS VTS2 vs Sea Depth

The clearest difference is in-app purchases: GPS VTS2 at none against Sea Depth's 10. Sea Depth's advantage is update cadence (weekly vs every 38 months) and chart position (#170 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Sea Depth sells 10 in-app purchases, starting at $99.99 per year. GPS VTS2 asks for nothing beyond the download.

GPS VTS2 ships an update every 38 months, Sea Depth weekly. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | GPS VTS2 | Sea Depth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (4 ratings)](https://appshunter.io/ios/app/sea-depth/id6747972372/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#170** |
| Size | 155 MB | 105 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Foneology](https://appshunter.io/developer/1525967469) | [Seadepth Charst](https://appshunter.io/developer/1823642107) |

## What reviewers say

### GPS VTS2

[App page](https://appshunter.io/ios/app/gps-vts2/id1502534808)

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

**In-app purchases:** none


### Sea Depth

[App page](https://appshunter.io/ios/app/sea-depth/id6747972372)

**Currently charting:** #170 Top Grossing · Navigation (US App Store)

Visualize detailed underwater terrain with high-resolution bathymetric charts. Gain deeper insights into seafloor structure, contours, and terrain for offshore activities. Includes optional data overlays and waypoint management for enhanced situational awareness.

**Highlights:** High-resolution shaded-relief bathymetry, Detailed depth contours with intelligent labeling, Optional data overlays (pipelines, bottom composition), GPX waypoint import/export, Drift Test tool, Offline chart access

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Charts Access | $99.99 | per year |
| Western GOA 50% | $150.00 | one-time |
| Eastern GOA 30% | $209.99 | one-time |
| Cental GOA 20% | $239.99 | one-time |
| Eastern GOA 20% | $239.99 | one-time |
| Cental GOA | $300.00 | one-time |
| Western GOA | $300.00 | one-time |
| Eastern GOA | $300.00 | one-time |
| Florida-West Coast | $300.00 | one-time |
| South Florida/Northern Bahamas | $300.00 | one-time |


## Frequently asked questions

### Is GPS VTS2 free?

GPS VTS2 is free to download, with no in-app purchases.

### Is Sea Depth free?

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

### Do GPS VTS2 or Sea Depth have ads?

Neither GPS VTS2 nor Sea Depth shows ads.

### Which is updated more often, GPS VTS2 or Sea Depth?

GPS VTS2 ships an update every 38 months, and Sea Depth weekly. Most recently, GPS VTS2 was updated on September 19, 2026 and Sea Depth on September 14, 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.*