# GTViewer vs DokuMan

The clearest difference is in-app purchases: GTViewer at none against DokuMan's 1. GTViewer also leads on update cadence (monthly vs every 2 months) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. DokuMan sells 1 one-off in-app purchase. GTViewer asks for nothing beyond the download.

GTViewer ships an update monthly, DokuMan every 2 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | GTViewer | DokuMan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/gtviewer/id905970171/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 25 MB | 4 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Graphic Technologies, Inc.](https://appshunter.io/developer/460458003) | [Aleksandrs Bertulis](https://appshunter.io/developer/1825425669) |

## What reviewers say

### GTViewer

[App page](https://appshunter.io/ios/app/gtviewer/id905970171)

This application allows users to download and view geospatial data on Apple devices without an internet connection. It functions similarly to a web-based counterpart but is designed for offline use.

**Highlights:** Offline geospatial data viewing, Downloadable data, Apple device compatibility, Geospatial data visualization

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

**In-app purchases:** none


### DokuMan

[App page](https://appshunter.io/ios/app/dokuman-german-docs-and-ids/id6748360659)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DokuMan Pro - Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is GTViewer free?

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

### Is DokuMan free?

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

### Do GTViewer or DokuMan have ads?

Neither GTViewer nor DokuMan shows ads.

### Which is updated more often, GTViewer or DokuMan?

GTViewer ships an update monthly, and DokuMan every 2 months. Most recently, GTViewer was updated on October 24, 2026 and DokuMan on October 20, 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.*