# UAEH vs DEM

The clearest difference is update cadence: DEM at every 6 months against UAEH's every 43 months. DEM also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

UAEH ships an update every 43 months, DEM every 6 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | UAEH | DEM |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 20 MB | 4 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Villeda Ramirez, Alan](https://appshunter.io/developer/1131083593) | [EL COLEGIO DE MEXICO, A. C.](https://appshunter.io/developer/1540361702) |

## What reviewers say

### UAEH

[App page](https://appshunter.io/ios/app/uaeh/id1341418973)

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

**In-app purchases:** none


### DEM

[App page](https://appshunter.io/ios/app/dem/id1540361700)

This app provides a comprehensive dictionary of Mexican Spanish, based on extensive research of vocabulary used in Mexico since 1921. It includes definitions, spelling rules, prefixes, suffixes, number writing, and demonyms, all accessible offline.

**Highlights:** Mexican Spanish vocabulary definitions, Spelling rules, Prefixes and suffixes, Number writing guidelines, List of demonyms, Offline access to all features

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UAEH free?

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

### Is DEM free?

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

### Do UAEH or DEM have ads?

Neither UAEH nor DEM shows ads.

### Which is updated more often, UAEH or DEM?

UAEH ships an update every 43 months, and DEM every 6 months. Most recently, UAEH was updated on October 9, 2026 and DEM on October 15, 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.*