# CRU App vs Baikru Prep

The clearest difference is in-app purchases: CRU App at none against Baikru Prep's 9. Baikru Prep's advantage is update cadence (weekly vs every 6 weeks) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Baikru Prep sells 9 one-off in-app purchases. CRU App asks for nothing beyond the download.

CRU App ships an update every 6 weeks, Baikru Prep weekly. The most recent releases landed on September 14, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | CRU App | Baikru Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 77 MB | 152 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Krung Thai Bank](https://appshunter.io/developer/383583054) | [Nuttawat Chakitniran](https://appshunter.io/developer/1876737472) |

## What reviewers say

### CRU App

[App page](https://appshunter.io/ios/app/cru-app/id1628069598)

**In-app purchases:** none


### Baikru Prep

[App page](https://appshunter.io/ios/app/baikru-prep/id6759080716)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Baikru Starter (4 เดือน) | $7.99 | one-time |
| ระบบติวใบประกอบวิชาชีพตลอดชีพ | $9.99 | one-time |
| Baikru Standard (1 ปี) | $9.99 | one-time |
| ระบบติวสอบครูผู้ช่วย 4 เดือน | $11.99 | one-time |
| ระบบติวสอบครูผู้ช่วยตลอดชีพ | $12.99 | one-time |
| ระบบติวสอบครูผู้ช่วย 1 ปี | $17.99 | one-time |
| Baikru Lifetime Pro | $19.99 | one-time |
| ระบบติวสอบครูผู้ช่วยตลอดชีพ | $29.99 | one-time |
| ติวสอบ 2 จักรวาลตลอดชีพ | $34.99 | one-time |


## Frequently asked questions

### Is CRU App free?

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

### Is Baikru Prep free?

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

### Do CRU App or Baikru Prep have ads?

Neither CRU App nor Baikru Prep shows ads.

### Which is updated more often, CRU App or Baikru Prep?

CRU App ships an update every 6 weeks, and Baikru Prep weekly. Most recently, CRU App was updated on September 14, 2026 and Baikru Prep on September 7, 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.*