# Crazing Math vs WHERE'S  NUMBER!

The clearest difference is in-app purchases: WHERE'S  NUMBER! at none against Crazing Math's 1. WHERE'S  NUMBER! also leads on ads (none vs shown). Crazing Math's advantage is update cadence (every 4 months vs every 25 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Crazing Math sells 1 one-off in-app purchase. WHERE'S  NUMBER! asks for nothing beyond the download.

Crazing Math ships an update every 4 months, WHERE'S  NUMBER! every 25 months. The most recent releases landed on September 21, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Crazing Math | WHERE'S  NUMBER! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (8 ratings)](https://appshunter.io/ios/app/crazing-math/id1071727485/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 96.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 months** | Every 25 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 40 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cuong Du Duc](https://appshunter.io/developer/951332376) | [mieko kamiya](https://appshunter.io/developer/544279597) |

## What reviewers say

### Crazing Math

[App page](https://appshunter.io/ios/app/crazing-math/id1071727485)

A fast-paced game that challenges your mental math abilities. Select three numbers that sum to a target value within a time limit. The challenge increases as the timer counts down, requiring quick thinking and rapid calculations.

**Highlights:** Time-based challenges, Select three numbers to sum, Increasing difficulty, Random number generation, High score tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### WHERE'S  NUMBER!

[App page](https://appshunter.io/ios/app/wheres-number/id1611106033)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Crazing Math free?

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

### Is WHERE'S  NUMBER! free?

WHERE'S  NUMBER! is free to download, with no in-app purchases.

### Do Crazing Math or WHERE'S  NUMBER! have ads?

Crazing Math shows ads; WHERE'S  NUMBER! does not.

### Which is updated more often, Crazing Math or WHERE'S  NUMBER!?

Crazing Math ships an update every 4 months, and WHERE'S  NUMBER! every 25 months. Most recently, Crazing Math was updated on September 21, 2026 and WHERE'S  NUMBER! on September 16, 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.*