# UMCS Guide vs GMDE Lite

The clearest difference is update cadence: GMDE Lite at every 3 weeks against UMCS Guide's every 16 months. GMDE Lite also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, 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.

UMCS Guide ships an update every 16 months, GMDE Lite every 3 weeks. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | UMCS Guide | GMDE Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gmde-lite/id1557325241/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 12 MB | 48 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Uniwersytet Marii Curie-Skłodowskiej](https://appshunter.io/developer/1459627900) | [Richard Allmendinger](https://appshunter.io/developer/1194772609) |

## What reviewers say

### UMCS Guide

[App page](https://appshunter.io/ios/app/umcs-guide/id1460001587)

**Features:** macOS Compatibility

**In-app purchases:** none


### GMDE Lite

[App page](https://appshunter.io/ios/app/gmde-lite/id1557325241)

This app allows users to record geological data, including points of interest, orientations, and contacts, with detailed annotations and photos. It offers multiple methods for orientation input and data visualization, with seamless integration for data exchange across devices and platforms.

**Highlights:** Record points of interest with photos and descriptions, Annotate photos and create digital sketches, Multiple methods for orientation input, Data import/export from various sources, Visualize orientation data on equal area projection, Use device as a rangefinder for distance calculation

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

**In-app purchases:** none


## Frequently asked questions

### Is UMCS Guide free?

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

### Is GMDE Lite free?

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

### Do UMCS Guide or GMDE Lite have ads?

Neither UMCS Guide nor GMDE Lite shows ads.

### Which is updated more often, UMCS Guide or GMDE Lite?

UMCS Guide ships an update every 16 months, and GMDE Lite every 3 weeks. Most recently, UMCS Guide was updated on October 3, 2026 and GMDE Lite on October 9, 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.*