# Thời khoá biểu vs Timetable‑Principal Version

The clearest difference is in-app purchases: Thời khoá biểu at none against Timetable‑Principal Version's 3. Timetable‑Principal Version's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Timetable‑Principal Version sells 3 in-app purchases, starting at $1.99 per month. Thời khoá biểu asks for nothing beyond the download.

## The numbers

| Metric | Thời khoá biểu | Timetable‑Principal Version |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 3 days |
| Size | 34 MB | 18 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KIEU NGUYEN](https://appshunter.io/developer/1737999404) | [shouhui qi](https://appshunter.io/developer/1185710456) |

## What reviewers say

### Thời khoá biểu

[App page](https://appshunter.io/ios/app/thoi-khoa-bieu/id6754248555)

**Features:** macOS Compatibility

**In-app purchases:** none


### Timetable‑Principal Version

[App page](https://appshunter.io/ios/app/timetableprincipal-version/id6810970384)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold VIP | $1.99 | per month |
| Diamond VIP | $3.99 | per month |
| Supreme VIP | $5.99 | per month |


## Frequently asked questions

### Is Thời khoá biểu free?

Thời khoá biểu is free to download, with no in-app purchases.

### Is Timetable‑Principal Version free?

Timetable‑Principal Version is free to download, with in-app purchases available.

### Do Thời khoá biểu or Timetable‑Principal Version have ads?

Thời khoá biểu shows ads; Timetable‑Principal Version does not.

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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.*