# SiiAPP vs Dux app

The clearest difference is iOS requirement: SiiAPP at 13.0 against Dux app's 15.0. On price, update cadence, 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.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 22, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | SiiAPP | Dux app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/siiapp/id1488201798/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 12.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | — |
| Size | 61 MB | 11 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Mendez Hernandez](https://appshunter.io/developer/1488201797) | [angel orozco](https://appshunter.io/developer/1736673130) |

## What reviewers say

### SiiAPP

[App page](https://appshunter.io/ios/app/siiapp/id1488201798)

Easily access class schedules, teacher details, and professor reviews. View past academic cycles and customize your timetable. Offline access available for loaded information.

**Highlights:** Classroom and teacher lookup, Professor reviews and ratings, Customizable timetable design, Past academic cycle schedules, Offline access to data

**Features:** macOS Compatibility

**In-app purchases:** none


### Dux app

[App page](https://appshunter.io/ios/app/dux-app/id6756594800)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SiiAPP free?

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

### Is Dux app free?

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

### Do SiiAPP or Dux app have ads?

Neither SiiAPP nor Dux app shows ads.

### Which is updated more often, SiiAPP or Dux app?

SiiAPP ships an update fortnightly, and Dux app fortnightly. Most recently, SiiAPP was updated on October 22, 2026 and Dux app on September 30, 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.*