# SIU vs UDI APP

The clearest difference is update cadence: SIU at every 4 months against UDI APP's every 11 months. SIU also leads on iOS requirement (11.0 vs 13.0). 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.

SIU ships an update every 4 months, UDI APP every 11 months. The most recent releases landed on August 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SIU | UDI APP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (23 ratings)](https://appshunter.io/ios/app/siu/id784586838/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Monetization | Free | — |
| Size | 124 MB | 26 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Netvalle IOS](https://appshunter.io/developer/784586843) | [Freddy Encinas Cuellar](https://appshunter.io/developer/1170589849) |

## What reviewers say

### SIU

[App page](https://appshunter.io/ios/app/siu/id784586838)

This tool simplifies university life by providing access to academic information, class schedules, grades, payment plans, and direct communication with university departments. Optimize your time and academic performance with this all-in-one solution.

**Highlights:** Academic information access, Class schedule review, Grade tracking, Payment plan management, Departmental inquiries and suggestions, All-in-one university management

**Features:** macOS Compatibility

**In-app purchases:** none


### UDI APP

[App page](https://appshunter.io/ios/app/udi-app/id1470669745)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SIU free?

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

### Is UDI APP free?

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

### Do SIU or UDI APP have ads?

Neither SIU nor UDI APP shows ads.

### Which is updated more often, SIU or UDI APP?

SIU ships an update every 4 months, and UDI APP every 11 months. Most recently, SIU was updated on August 25, 2026 and UDI APP on September 8, 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.*