GTViewer vs EpochField 5.2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GTViewer
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.
- Offline geospatial data viewing
- Downloadable data
- Apple device compatibility
- Geospatial data visualization
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GTViewer downloads geospatial data for viewing on an Apple device like GTWeb, but in an offline fashion.
EpochField 5.2
This mobile mapping solution helps users streamline daily workflows by providing tools to visualize, search, and identify GIS data. It offers a library of basemaps and operational data, and navigates users using on-board GPS. The app functions offline for most features, making it ideal for field workers.
- Streamline daily workflows
- Download corporate GIS data
- Visualize, search, and identify data
- Library of basemaps and operational data
- On-board GPS navigation
- Offline functionality
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Epoch Solutions Group's mobile mapping solution, EpochField, provides its users with a suite of user-friendly tools to help streamline daily workflows. Corporate GIS data can be downloaded efficiently and securely over cellular or wireless networks. That data can be visualized, searched, and identified through several easy-to-use tools. EpochField also provides its users a substantial library of basemaps and operational data, and communicates directly with on-board GPS devices to help navigate users throughout their service territory. 98% of the application will work whether the user is online or offline, making EpochField an invaluable piece of a utility field worker’s toolkit.
Screenshots
Verdict
The clearest difference is rating: GTViewer at 3.8 against EpochField 5.2's 3.0. GTViewer also leads on update cadence (fortnightly vs monthly). EpochField 5.2's advantage is iOS requirement (15.0 vs 17.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
GTViewer ships an update fortnightly, EpochField 5.2 monthly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | GTViewer | EpochField 5.2 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (4 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 164 MB |
| Age rating | 4+ | 4+ |
| Developer | Graphic Technologies, Inc. | Epoch Solutions Group Inc |
Customer experience
GTViewer
EpochField 5.2
In-app purchases
GTViewer
No in-app purchases
EpochField 5.2
No in-app purchases
Questions
Is GTViewer free?
Is EpochField 5.2 free?
Which has better reviews, GTViewer or EpochField 5.2?
Do GTViewer or EpochField 5.2 have ads?
Which is updated more often, GTViewer or EpochField 5.2?
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