# Crestellar Academy vs DSE MistakeBook

The clearest difference is in-app purchases: DSE MistakeBook at none against Crestellar Academy's 10. Crestellar Academy's advantage is update cadence (weekly vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Crestellar Academy sells 10 in-app purchases, starting at $4.99 per month. DSE MistakeBook asks for nothing beyond the download.

Crestellar Academy ships an update weekly, DSE MistakeBook every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Crestellar Academy | DSE MistakeBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 85 MB | 2 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Crestellar Academy Limited](https://appshunter.io/developer/1765192168) | [Yin Man Cheung](https://appshunter.io/developer/6799562449) |

## What reviewers say

### Crestellar Academy

[App page](https://appshunter.io/ios/app/crestellar-academy/id6670178477)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $4.99 | per month |
| Pro | $9.99 | per month |
| Max 5x | $14.99 | per month |
| Max 20x | $34.99 | per month |
| Plus | $49.99 | per year |
| Pro | $99.99 | per year |
| Max 5x | $149.99 | per year |
| Max 20x | $299.99 | per year |
| 500 Tokens | $5.99 | one-time |
| 2,000 Tokens | $19.99 | one-time |


### DSE MistakeBook

[App page](https://appshunter.io/ios/app/dse-mistakebook/id6799562447)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crestellar Academy free?

Crestellar Academy is free to download, with in-app purchases available.

### Is DSE MistakeBook free?

DSE MistakeBook is free to download, with no in-app purchases.

### Do Crestellar Academy or DSE MistakeBook have ads?

Neither Crestellar Academy nor DSE MistakeBook shows ads.

### Which is updated more often, Crestellar Academy or DSE MistakeBook?

Crestellar Academy ships an update weekly, and DSE MistakeBook every 2 weeks. Most recently, Crestellar Academy was updated on October 30, 2026 and DSE MistakeBook on October 31, 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.*