# DSD M vs Baikru Prep

The clearest difference is in-app purchases: DSD M at none against Baikru Prep's 9. DSD M also leads on iOS requirement (10.0 vs 13.0). Baikru Prep's advantage is update cadence (weekly vs every 13 months). 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. DSD M asks for nothing beyond the download.

DSD M ships an update every 13 months, Baikru Prep weekly. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | DSD M | Baikru Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Size | 557 MB | 152 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Department of Skill Development](https://appshunter.io/developer/1194354847) | [Nuttawat Chakitniran](https://appshunter.io/developer/1876737472) |

## What reviewers say

### DSD M

[App page](https://appshunter.io/ios/app/dsd-m-learning/id1312698744)

**Features:** macOS Compatibility

**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 DSD M free?

DSD M 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 DSD M or Baikru Prep have ads?

Neither DSD M nor Baikru Prep shows ads.

### Which is updated more often, DSD M or Baikru Prep?

DSD M ships an update every 13 months, and Baikru Prep weekly. Most recently, DSD M was updated on October 6, 2026 and Baikru Prep on October 8, 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.*