# Omni Study vs Thời Khoá Biểu

The clearest difference is in-app purchases: Thời Khoá Biểu at none against Omni Study's 3. Thời Khoá Biểu also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Omni Study sells 3 in-app purchases, starting at $1.99 per month. Thời Khoá Biểu asks for nothing beyond the download.

## The numbers

| Metric | Omni Study | Thời Khoá Biểu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Size | 69 MB | 2 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Duy Khiem Dng](https://appshunter.io/developer/1896462033) | [Son Nguyen Hong](https://appshunter.io/developer/1896767655) |

## What reviewers say

### Omni Study

[App page](https://appshunter.io/ios/app/omni-study-schedule-and-notes/id6767295511)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Omni Study Pro | $1.99 | per month |
| Omni Study Pro | $19.99 | per year |
| Omni Study Lifetime Pro | $79.99 | one-time |


### Thời Khoá Biểu

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

**In-app purchases:** none


## Frequently asked questions

### Is Omni Study free?

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

### Is Thời Khoá Biểu free?

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

### Do Omni Study or Thời Khoá Biểu have ads?

Omni Study shows ads; Thời Khoá Biểu 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.*