# DersCraft vs Oyster | Middle School Math

The clearest difference is in-app purchases: DersCraft at none against Oyster | Middle School Math's 6. DersCraft also leads on iOS requirement (15.1 vs 17.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Oyster | Middle School Math sells 5 in-app purchases, starting at $19.99 per month. DersCraft asks for nothing beyond the download.

DersCraft ships an update fortnightly, Oyster | Middle School Math every 2 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | DersCraft | Oyster | Middle School Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 92 MB | 91 MB |
| Requires iOS | **15.1** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [TUNAHAN MUGULKOC](https://appshunter.io/developer/6783832451) | [Bulvar.co Limited](https://appshunter.io/developer/6799644570) |

## What reviewers say

### DersCraft

[App page](https://appshunter.io/ios/app/derscraft/id6783832449)

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

**In-app purchases:** none


### Oyster | Middle School Math

[App page](https://appshunter.io/ios/app/oyster-middle-school-math/id6799644568)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Oyster Premium (Yearly) | $19.99 | per month |
| Premium Monthly Full Math Lessons | $19.99 | per month |
| Oyster Premium (Monthly) | $19.99 | per month |
| Oyster Premium (Yearly) | $129.00 | per year |
| Premium Yearly Full Math Lessons | $129.99 | per year |


## Frequently asked questions

### Is DersCraft free?

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

### Is Oyster | Middle School Math free?

Oyster | Middle School Math is free to download, with in-app purchases available.

### Do DersCraft or Oyster | Middle School Math have ads?

Neither DersCraft nor Oyster | Middle School Math shows ads.

### Which is updated more often, DersCraft or Oyster | Middle School Math?

DersCraft ships an update fortnightly, and Oyster | Middle School Math every 2 weeks. Most recently, DersCraft was updated on October 31, 2026 and Oyster | Middle School Math on November 6, 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.*