# Pi Masters vs Wiki Reader

The clearest difference is in-app purchases: Pi Masters at none against Wiki Reader's 3. Pi Masters also leads on device support (3 vs 1). Wiki Reader's advantage is update cadence (every 6 weeks vs every 3 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Wiki Reader sells 3 in-app purchases, starting at $5.99 per 7 days. Pi Masters asks for nothing beyond the download.

Pi Masters ships an update every 3 months, Wiki Reader every 6 weeks. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Pi Masters | Wiki Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 2 MB | 24 MB |
| Requires iOS | 17.5 | **16.0** |
| Devices | **iPhone, iPad, Vision Pro** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dave Poirier](https://appshunter.io/developer/757241910) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Pi Masters

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Wiki Reader

[App page](https://appshunter.io/ios/app/wiki-reader-ai-study-and-learn/id6760022581)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Plan | $5.99 | per 7 days |
| Premium Yearly | $29.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Pi Masters free?

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

### Is Wiki Reader free?

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

### Do Pi Masters or Wiki Reader have ads?

Neither Pi Masters nor Wiki Reader shows ads.

### Which is updated more often, Pi Masters or Wiki Reader?

Pi Masters ships an update every 3 months, and Wiki Reader every 6 weeks. Most recently, Pi Masters was updated on October 4, 2026 and Wiki Reader on October 5, 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.*