# 石臼2 vs Pi Clicker

The clearest difference is ads: Pi Clicker at none against 石臼2's shown. Pi Clicker also leads on update cadence (fortnightly vs every 2 months). 石臼2's advantage is iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

石臼2 ships an update every 2 months, Pi Clicker fortnightly. The most recent releases landed on September 30, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 石臼2 | Pi Clicker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 72 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hirokazu Oshimo](https://appshunter.io/developer/1627742277) | [Toru Kano](https://appshunter.io/developer/1839681467) |

## What reviewers say

### 石臼2

[App page](https://appshunter.io/ios/app/2-ishiusu2/id6770004494)

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

**In-app purchases:** none


### Pi Clicker

[App page](https://appshunter.io/ios/app/pi-clicker/id6801535591)

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

**In-app purchases:** none


## Frequently asked questions

### Is 石臼2 free?

石臼2 is free to download, with no in-app purchases.

### Is Pi Clicker free?

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

### Do 石臼2 or Pi Clicker have ads?

石臼2 shows ads; Pi Clicker does not.

### Which is updated more often, 石臼2 or Pi Clicker?

石臼2 ships an update every 2 months, and Pi Clicker fortnightly. Most recently, 石臼2 was updated on September 30, 2026 and Pi Clicker on October 17, 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.*