# iOpenGTS vs Offline Map Data Generator

The clearest difference is ads: Offline Map Data Generator at none against iOpenGTS's shown. Offline Map Data Generator also leads on update cadence (every 7 months vs every 81 months). iOpenGTS's advantage is iOS requirement (11.0 vs 14.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. iOpenGTS sells 1 one-off in-app purchase and Offline Map Data Generator sells 6 in-app purchases, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

iOpenGTS ships an update every 81 months, Offline Map Data Generator every 7 months. The most recent releases landed on October 6, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | iOpenGTS | Offline Map Data Generator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 81 months | **Every 7 months** |
| Size | 30 MB | 187 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| 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 |


### Offline Map Data Generator

[App page](https://appshunter.io/ios/app/offline-map-data-generator/id6448957147)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| App Subscription | $19.99 | per year |
| OMDG Elevate API | $24.99 | per year |
| OMDG Vector Conversion API | $24.99 | per year |
| OMDG DEM Downloader | $24.99 | per 7 days |
| Geo Request AOI | $49.99 | per 7 days |
| Offline Map Data Generator | $999.99 | per year |


## Frequently asked questions

### Is iOpenGTS free?

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

### Is Offline Map Data Generator free?

Offline Map Data Generator is free to download, with in-app purchases available.

### Do iOpenGTS or Offline Map Data Generator have ads?

iOpenGTS shows ads; Offline Map Data Generator does not.

### Which is updated more often, iOpenGTS or Offline Map Data Generator?

iOpenGTS ships an update every 81 months, and Offline Map Data Generator every 7 months. Most recently, iOpenGTS was updated on October 6, 2026 and Offline Map Data Generator on September 22, 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.*