# Crazy Math vs Blockdoku

The clearest difference is rating: Crazy Math at 5.0 against Blockdoku's 4.0. Crazy Math also leads on ads (none vs shown) and update cadence (daily vs every 9 days). Blockdoku's advantage is ratings volume (7 vs 1). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Crazy Math sells 5 one-off in-app purchases and Blockdoku sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Crazy Math holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Blockdoku has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Crazy Math's written reviews are positive against 80% of Blockdoku's.

Crazy Math ships an update daily, Blockdoku every 9 days. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Crazy Math | Blockdoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crazy-math-fast-calculation/id1458684902/reviews)** | [4.0 (7 ratings)](https://appshunter.io/ios/app/blockdoku-sudoku-plus-block/id1541576451/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 9 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 53 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tien Le](https://appshunter.io/developer/840899581) | [Gyuhyeon Jeon](https://appshunter.io/developer/353770805) |

## What reviewers say

### Crazy Math

[App page](https://appshunter.io/ios/app/crazy-math-fast-calculation/id1458684902)

This game helps improve your calculation speed and offers a fun way to relax or play with others. Choose 'RIGHT' or 'WRONG' to answer math problems as quickly as possible. Compete for the highest score across various difficulty levels.

**Highlights:** Improve calculation speed, Relaxing gameplay, Play with friends and family, Multiple difficulty levels, Simple 'RIGHT' or 'WRONG' mechanic, High score competition

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add 20 lives | $0.99 | one-time |
| Remove advertisement | $1.99 | one-time |
| Add 50 lives | $1.99 | one-time |
| Add 100 lives | $2.99 | one-time |
| Add 200 lives | $3.99 | one-time |


### Blockdoku

[App page](https://appshunter.io/ios/app/blockdoku-sudoku-plus-block/id1541576451)

This puzzle game merges Sudoku and block-filling mechanics on a 9x9 grid. Strategically place blocks to clear lines horizontally, vertically, or in squares for points and combos. Compete globally for the highest score and earn daily badges.

**Highlights:** Sudoku and block puzzle combination, 9x9 grid gameplay, Horizontal, vertical, and square line clearing, Combo scoring for high scores, Global score competition, Daily badge rewards, Chance item for strategic advantage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove advertisements | $0.99 | per month |


## Frequently asked questions

### Is Crazy Math free?

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

### Is Blockdoku free?

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

### Which has better reviews, Crazy Math or Blockdoku?

Crazy Math is rated higher. Crazy Math averages 5.0 out of 5 from 1 ratings, while Blockdoku averages 4.0 from 7 ratings.

### Do Crazy Math or Blockdoku have ads?

Blockdoku shows ads; Crazy Math does not.

### Which is updated more often, Crazy Math or Blockdoku?

Crazy Math ships an update daily, and Blockdoku every 9 days. Most recently, Crazy Math was updated on October 20, 2026 and Blockdoku on October 14, 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.*