# Mi UDD vs Ulern

The clearest difference is in-app purchases: Mi UDD at none against Ulern's 6. Ulern's advantage is update cadence (every 6 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ulern sells 6 in-app purchases, starting at $0.99 per 7 days. Mi UDD asks for nothing beyond the download.

Mi UDD ships an update every 3 months, Ulern every 6 days. The most recent releases landed on August 16, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Mi UDD | Ulern |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/mi-udd/id624081383/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 3.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 14 MB | 77 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Universidad del Desarrollo](https://appshunter.io/developer/624081386) | [Ulern](https://appshunter.io/developer/1817026359) |

## What reviewers say

### Mi UDD

[App page](https://appshunter.io/ios/app/mi-udd/id624081383)

Access your class schedule, book study rooms and sports facilities, and report infrastructure issues. Receive notifications for grades and class changes. Use your virtual ID for campus transportation and services.

**Highlights:** Class schedule access, Study room booking, Sports facility reservation, Infrastructure issue reporting, Virtual ID card, Grade notifications

**In-app purchases:** none


### Ulern

[App page](https://appshunter.io/ios/app/ulern/id6736619861)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ulern Plus Semanal | $0.99 | per 7 days |
| Ulern Plus | $1.99 | per month |
| Ulern Plus Semanal | $3.99 | per 7 days |
| Ulern Plus | $8.99 | per month |
| Ulern Plus Anual | $14.99 | per year |
| Ulern Plus | $79.99 | per year |


## Frequently asked questions

### Is Mi UDD free?

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

### Is Ulern free?

Ulern is free to download, with in-app purchases available.

### Do Mi UDD or Ulern have ads?

Neither Mi UDD nor Ulern shows ads.

### Which is updated more often, Mi UDD or Ulern?

Mi UDD ships an update every 3 months, and Ulern every 6 days. Most recently, Mi UDD was updated on August 16, 2026 and Ulern on September 4, 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.*