# UdeC Clases vs Ulern

The clearest difference is in-app purchases: UdeC Clases at none against Ulern's 6. UdeC Clases also leads on iOS requirement (12.0 vs 14.0). Ulern's advantage is update cadence (every 6 days vs every 2 months). On price, ads and device support there is nothing between them.

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

UdeC Clases ships an update every 2 months, Ulern every 6 days. The most recent releases landed on September 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | UdeC Clases | Ulern |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Size | 24 MB | 77 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [U-planner](https://appshunter.io/developer/1327455318) | [Ulern](https://appshunter.io/developer/1817026359) |

## What reviewers say

### UdeC Clases

[App page](https://appshunter.io/ios/app/udec-clases/id1453550141)

**Features:** macOS Compatibility

**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 UdeC Clases free?

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

### Is Ulern free?

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

### Do UdeC Clases or Ulern have ads?

Neither UdeC Clases nor Ulern shows ads.

### Which is updated more often, UdeC Clases or Ulern?

UdeC Clases ships an update every 2 months, and Ulern every 6 days. Most recently, UdeC Clases was updated on September 14, 2026 and Ulern on September 18, 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.*