# iOpenGTS vs GeoNames Map Explorer

The clearest difference is in-app purchases: GeoNames Map Explorer at none against iOpenGTS's 1. GeoNames Map Explorer also leads on ads (none vs shown) and update cadence (monthly vs every 81 months). iOpenGTS's advantage is iOS requirement (11.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. iOpenGTS sells 1 one-off in-app purchase. GeoNames Map Explorer asks for nothing beyond the download.

iOpenGTS ships an update every 81 months, GeoNames Map Explorer monthly. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | iOpenGTS | GeoNames Map Explorer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 81 months | **Monthly** |
| Size | 30 MB | 150 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [3B Soft srls](https://appshunter.io/developer/368374927) | [Tech Maven GeoSpatial LLC](https://appshunter.io/developer/1459067502) |

## What reviewers say

### iOpenGTS

[App page](https://appshunter.io/ios/app/iopengts/id942928378)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenGTS adavanced features | $2.99 | one-time |


### GeoNames Map Explorer

[App page](https://appshunter.io/ios/app/geonames-map-explorer/id1566866256)

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

**In-app purchases:** none


## Frequently asked questions

### Is iOpenGTS free?

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

### Is GeoNames Map Explorer free?

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

### Do iOpenGTS or GeoNames Map Explorer have ads?

iOpenGTS shows ads; GeoNames Map Explorer does not.

### Which is updated more often, iOpenGTS or GeoNames Map Explorer?

iOpenGTS ships an update every 81 months, and GeoNames Map Explorer monthly. Most recently, iOpenGTS was updated on October 6, 2026 and GeoNames Map Explorer on October 3, 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.*