# ProblemSum vs Chapter

The clearest difference is price: Chapter at Free against ProblemSum's $2.99. Chapter also leads on update cadence (every 3 days vs every 5 weeks). ProblemSum's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Chapter is free to download; ProblemSum costs $2.99 up front. Chapter sells 1 one-off in-app purchase. ProblemSum asks for nothing beyond the download.

ProblemSum ships an update every 5 weeks, Chapter every 3 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ProblemSum | Chapter |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/problemsum/id1273718042/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Paid | — |
| Size | 2 MB | 295 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aeterna Solutions](https://appshunter.io/developer/1273718041) | [Chapter Technologies Limited](https://appshunter.io/developer/1756532171) |

## What reviewers say

### ProblemSum

[App page](https://appshunter.io/ios/app/problemsum/id1273718042)

Practice math word problems aligned with the Singapore Mathematics syllabus for Primary 6 students. Get detailed solutions for each problem. The app works offline and requires no account.

**Highlights:** Random math word problem generation, Singapore Math syllabus alignment, Detailed step-by-step solutions, Offline functionality, No account required, Ad-free experience

**Features:** Vision Pro support

**In-app purchases:** none


### Chapter

[App page](https://appshunter.io/ios/app/chapter-careers-game/id6529547618)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chapter Plus | Free | one-time |


## Frequently asked questions

### Is ProblemSum free?

ProblemSum costs $2.99, with no in-app purchases.

### Is Chapter free?

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

### Do ProblemSum or Chapter have ads?

Neither ProblemSum nor Chapter shows ads.

### Which is updated more often, ProblemSum or Chapter?

ProblemSum ships an update every 5 weeks, and Chapter every 3 days. Most recently, ProblemSum was updated on October 2, 2026 and Chapter on September 30, 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.*