# ProblemSum vs 88tuition

The clearest difference is price: 88tuition at Free against ProblemSum's $2.99. 88tuition also leads on iOS requirement (13.0 vs 18.0). ProblemSum's advantage is in-app purchases (none vs 10). On update cadence, ads and device support there is nothing between them.

88tuition is free to download; ProblemSum costs $2.99 up front. 88tuition sells 10 one-off in-app purchases. ProblemSum asks for nothing beyond the download.

ProblemSum ships an update every 5 weeks, 88tuition every 2 months. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | ProblemSum | 88tuition |
| --- | --- | --- |
| 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 2 months |
| Monetization | Paid | — |
| Size | 2 MB | 35 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aeterna Solutions](https://appshunter.io/developer/1273718041) | [88tuition](https://appshunter.io/developer/1527079688) |

## 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


### 88tuition

[App page](https://appshunter.io/ios/app/88tuition/id1527079686)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Primary 1-2 One Subject | $169.99 | one-time |
| Primary 3-6 One Subject | $199.99 | one-time |
| Secondary 1-4 One Subject | $229.99 | one-time |
| Primary 1-2  Two Subject | $299.99 | one-time |
| Primary 1-2 three subject | $349.99 | one-time |
| Primary 3-6 Two Subject | $349.99 | one-time |
| Secondary 1-4 Two Subject | $399.99 | one-time |
| Primary 1-2 Three Subject | $449.99 | one-time |
| Secondary 1-4 Three Subject | $499.99 | one-time |
| Secondary 1-4 pricing | $599.99 | one-time |


## Frequently asked questions

### Is ProblemSum free?

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

### Is 88tuition free?

88tuition is free to download, with in-app purchases available.

### Do ProblemSum or 88tuition have ads?

Neither ProblemSum nor 88tuition shows ads.

### Which is updated more often, ProblemSum or 88tuition?

ProblemSum ships an update every 5 weeks, and 88tuition every 2 months. Most recently, ProblemSum was updated on September 23, 2026 and 88tuition on September 13, 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.*