# GTViewer vs EpochField 5.2

The clearest difference is rating: GTViewer at 3.8 against EpochField 5.2's 1.0. GTViewer also leads on ratings volume (4 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GTViewer holds the better App Store score, 3.8 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | GTViewer | EpochField 5.2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/gtviewer/id905970171/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/epochfield-52/id1658632149/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Size | 25 MB | 156 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Graphic Technologies, Inc.](https://appshunter.io/developer/460458003) | [Epoch Solutions Group Inc](https://appshunter.io/developer/982576882) |

## 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


### EpochField 5.2

[App page](https://appshunter.io/ios/app/epochfield-52/id1658632149)

This mobile mapping tool helps streamline daily workflows for field workers. It allows efficient download, visualization, and search of corporate GIS data, with offline functionality and GPS navigation. Access a library of basemaps and operational data to navigate service territories.

**Highlights:** Streamline daily workflows, Download corporate GIS data, Visualize and search data, Offline functionality, GPS navigation, Basemap library

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GTViewer free?

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

### Is EpochField 5.2 free?

EpochField 5.2 is free to download, with no in-app purchases.

### Which has better reviews, GTViewer or EpochField 5.2?

GTViewer is rated higher. GTViewer averages 3.8 out of 5 from 4 ratings, while EpochField 5.2 averages 1.0 from 1 ratings.

### Do GTViewer or EpochField 5.2 have ads?

Neither GTViewer nor EpochField 5.2 shows ads.

### Which is updated more often, GTViewer or EpochField 5.2?

GTViewer ships an update monthly, and EpochField 5.2 monthly. Most recently, GTViewer was updated on September 16, 2026 and EpochField 5.2 on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*