# UNOi 4 vs SILEO App

The clearest difference is update cadence: UNOi 4 at every 6 weeks against SILEO App's every 66 months. SILEO App's advantage is device support (3 vs 1). On price, review sentiment, 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.

UNOi 4 ships an update every 6 weeks, SILEO App every 66 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | UNOi 4 | SILEO App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/unoi-4/id1473453935/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 66 months |
| Monetization | Free | Free |
| Size | 135 MB | 36 MB |
| Requires iOS | **14.0** | 15 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Grupo Santillana Educacion Global, S.L.](https://appshunter.io/developer/445034184) | [Fundacion Mexicana para el Fomento de la Educacion y el Desarrollo AC](https://appshunter.io/developer/1039976776) |

## What reviewers say

### UNOi 4

[App page](https://appshunter.io/ios/app/unoi-4/id1473453935)

This app transforms classroom management by centering the student and breaking down subject barriers. It fosters learning through engagement and practical application, aiming to create transformative citizens.

**Highlights:** Student-centered learning, Interdisciplinary approach, Learning through engagement, Practical application focus, Classroom management transformation

**In-app purchases:** none


### SILEO App

[App page](https://appshunter.io/ios/app/sileo-app/id1554325138)

This system enhances reading speed and comprehension significantly. It aims to improve your reading velocity by 10 to 12 times while ensuring 100% understanding of the material.

**Highlights:** Increases reading speed, Improves comprehension, Optimized reading system, Personalized learning

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

**In-app purchases:** none


## Frequently asked questions

### Is UNOi 4 free?

UNOi 4 is free to download, with no in-app purchases.

### Is SILEO App free?

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

### Do UNOi 4 or SILEO App have ads?

Neither UNOi 4 nor SILEO App shows ads.

### Which is updated more often, UNOi 4 or SILEO App?

UNOi 4 ships an update every 6 weeks, and SILEO App every 66 months. Most recently, UNOi 4 was updated on November 3, 2026 and SILEO App on November 3, 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.*