# Pi Masters vs Calculus Problem & Quiz Solver

The clearest difference is in-app purchases: Pi Masters at none against Calculus Problem & Quiz Solver's 2. Calculus Problem & Quiz Solver's advantage is update cadence (every 3 weeks vs every 3 months) and iOS requirement (15.0 vs 17.5). On price, ads and device support there is nothing between them.

Both are free to download. Calculus Problem & Quiz Solver sells 2 in-app purchases, starting at $4.99 per 7 days. Pi Masters asks for nothing beyond the download.

Pi Masters ships an update every 3 months, Calculus Problem & Quiz Solver every 3 weeks. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Pi Masters | Calculus Problem & Quiz Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 2 MB | 67 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dave Poirier](https://appshunter.io/developer/757241910) | [Kukuh Nomikusain](https://appshunter.io/developer/1739975777) |

## What reviewers say

### Pi Masters

[App page](https://appshunter.io/ios/app/pi-masters/id6504531645)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculus Problem & Quiz Solver

[App page](https://appshunter.io/ios/app/calculus-problem-and-quiz-solver/id6757754410)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $4.99 | per 7 days |
| Pro (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is Pi Masters free?

Pi Masters is free to download, with no in-app purchases.

### Is Calculus Problem & Quiz Solver free?

Calculus Problem & Quiz Solver is free to download, with in-app purchases available.

### Do Pi Masters or Calculus Problem & Quiz Solver have ads?

Neither Pi Masters nor Calculus Problem & Quiz Solver shows ads.

### Which is updated more often, Pi Masters or Calculus Problem & Quiz Solver?

Pi Masters ships an update every 3 months, and Calculus Problem & Quiz Solver every 3 weeks. Most recently, Pi Masters was updated on October 4, 2026 and Calculus Problem & Quiz Solver on October 3, 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.*