# Thời Khóa Biểu vs Timetable‑Principal Version

The clearest difference is in-app purchases: Thời Khóa Biểu at none against Timetable‑Principal Version's 3. Timetable‑Principal Version's advantage is update cadence (every 2 days vs every 3 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support 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 Khóa Biểu asks for nothing beyond the download.

Thời Khóa Biểu ships an update every 3 months, Timetable‑Principal Version every 2 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Thời Khóa Biểu | Timetable‑Principal Version |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 1 MB | 15 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kiet Vo](https://appshunter.io/developer/6784882323) | [shouhui qi](https://appshunter.io/developer/1185710456) |

## What reviewers say

### Thời Khóa Biểu

[App page](https://appshunter.io/ios/app/thoi-khoa-bieu/id6787667343)

**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

**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 Khóa Biểu free?

Thời Khóa 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 Khóa Biểu or Timetable‑Principal Version have ads?

Neither Thời Khóa Biểu nor Timetable‑Principal Version shows ads.

### Which is updated more often, Thời Khóa Biểu or Timetable‑Principal Version?

Thời Khóa Biểu ships an update every 3 months, and Timetable‑Principal Version every 2 days. Most recently, Thời Khóa Biểu was updated on October 24, 2026 and Timetable‑Principal Version on October 24, 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.*