# 12th Grade Math Challenge vs Bias Handbook

The clearest difference is price: 12th Grade Math Challenge at Free against Bias Handbook's $0.99. 12th Grade Math Challenge also leads on iOS requirement (13.0 vs 17.0). Bias Handbook's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 11 months). On ads and device support there is nothing between them.

12th Grade Math Challenge is free to download; Bias Handbook costs $0.99 up front. 12th Grade Math Challenge sells 1 one-off in-app purchase. Bias Handbook asks for nothing beyond the download.

12th Grade Math Challenge ships an update every 11 months, Bias Handbook every 3 weeks. The most recent releases landed on October 30, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 12th Grade Math Challenge | Bias Handbook |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/12th-grade-math-challenge/id1626192903/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [IT365 Solutions Inc](https://appshunter.io/developer/1531416759) | [Stepapp, Inc.](https://appshunter.io/developer/1584132042) |

## What reviewers say

### 12th Grade Math Challenge

[App page](https://appshunter.io/ios/app/12th-grade-math-challenge/id1626192903)

Test your knowledge with 12th-grade level math problems and puzzles. Track your progress, challenge friends, and earn a certificate of your final score. Step-by-step solutions are available for better understanding.

**Highlights:** 12th-grade math questions, Math puzzles, Score certificates, Challenge friends, Step-by-step solutions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all Ads from Math 12 | $0.99 | one-time |


### Bias Handbook

[App page](https://appshunter.io/ios/app/bias-handbook/id6767604061)

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

**In-app purchases:** none


## Frequently asked questions

### Is 12th Grade Math Challenge free?

12th Grade Math Challenge is free to download, with in-app purchases available.

### Is Bias Handbook free?

Bias Handbook costs $0.99, with no in-app purchases.

### Do 12th Grade Math Challenge or Bias Handbook have ads?

Neither 12th Grade Math Challenge nor Bias Handbook shows ads.

### Which is updated more often, 12th Grade Math Challenge or Bias Handbook?

12th Grade Math Challenge ships an update every 11 months, and Bias Handbook every 3 weeks. Most recently, 12th Grade Math Challenge was updated on October 30, 2026 and Bias Handbook on October 7, 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.*