# Nerdy Math vs Casus Bul

The clearest difference is update cadence: Nerdy Math at weekly against Casus Bul's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Nerdy Math sells 3 in-app purchases, starting at $9.99 per 7 days and Casus Bul sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Nerdy Math ships an update weekly, Casus Bul every 2 weeks. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Nerdy Math | Casus Bul |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 123 MB | 44 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oguz Can](https://appshunter.io/developer/1692066345) | [Arda Adalar](https://appshunter.io/developer/1765307019) |

## What reviewers say

### Nerdy Math

[App page](https://appshunter.io/ios/app/nerdy-math/id6450151568)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nerdy Premium Weekly | $9.99 | per 7 days |
| Nerdy Premium Monthly | $19.99 | per month |
| Nerdy Premium Annual | $29.99 | per year |


### Casus Bul

[App page](https://appshunter.io/ios/app/casus-bul/id6755654222)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Casus Plus | $0.99 | per month |


## Frequently asked questions

### Is Nerdy Math free?

Nerdy Math is free to download, with in-app purchases available.

### Is Casus Bul free?

Casus Bul is free to download, with in-app purchases available.

### Do Nerdy Math or Casus Bul have ads?

Neither Nerdy Math nor Casus Bul shows ads.

### Which is updated more often, Nerdy Math or Casus Bul?

Nerdy Math ships an update weekly, and Casus Bul every 2 weeks. Most recently, Nerdy Math was updated on October 18, 2026 and Casus Bul on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*