# ENGIN Mobile vs Markus AI

The clearest difference is update cadence: Markus AI at weekly against ENGIN Mobile's monthly. ENGIN Mobile's advantage is iOS requirement (13.4 vs 15.1). 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.

ENGIN Mobile ships an update monthly, Markus AI weekly. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ENGIN Mobile | Markus AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 61 MB | 63 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Engineered Intelligence Inc.](https://appshunter.io/developer/1727178165) | [Augmented Intelligence Incorporated](https://appshunter.io/developer/1894841714) |

## What reviewers say

### ENGIN Mobile

[App page](https://appshunter.io/ios/app/engin-mobile/id6476569372)

**In-app purchases:** none


### Markus AI

[App page](https://appshunter.io/ios/app/markus-ai/id6772711300)

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

**In-app purchases:** none


## Frequently asked questions

### Is ENGIN Mobile free?

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

### Is Markus AI free?

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

### Do ENGIN Mobile or Markus AI have ads?

Neither ENGIN Mobile nor Markus AI shows ads.

### Which is updated more often, ENGIN Mobile or Markus AI?

ENGIN Mobile ships an update monthly, and Markus AI weekly. Most recently, ENGIN Mobile was updated on October 7, 2026 and Markus AI on October 14, 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.*