# ULSA vs Thời Khoá Biểu

The clearest difference is device support: ULSA at 3 against Thời Khoá Biểu's 1. ULSA also leads on iOS requirement (13.0 vs 17.0). On price, 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.

## The numbers

| Metric | ULSA | Thời Khoá Biểu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Size | 55 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Minh Nguyen Ba](https://appshunter.io/developer/1549498900) | [Son Nguyen Hong](https://appshunter.io/developer/1896767655) |

## What reviewers say

### ULSA

[App page](https://appshunter.io/ios/app/ulsa-e/id6742317413)

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

**In-app purchases:** none


### Thời Khoá Biểu

[App page](https://appshunter.io/ios/app/thoi-khoa-bieu-lich-hoc/id6776341285)

**In-app purchases:** none


## Frequently asked questions

### Is ULSA free?

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

### Is Thời Khoá Biểu free?

Thời Khoá Biểu is free to download, with no in-app purchases.

### Do ULSA or Thời Khoá Biểu have ads?

Neither ULSA nor Thời Khoá Biểu shows ads.

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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.*