# 100 Squares Calc vs π ~ Pi Fun App.

The clearest difference is in-app purchases: π ~ Pi Fun App. at none against 100 Squares Calc's 2. π ~ Pi Fun App. also leads on update cadence (every 2 days vs monthly). 100 Squares Calc's advantage is iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 100 Squares Calc sells 2 one-off in-app purchases. π ~ Pi Fun App. asks for nothing beyond the download.

100 Squares Calc ships an update monthly, π ~ Pi Fun App. every 2 days. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 100 Squares Calc | π ~ Pi Fun App. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/100-squares-calc/id534131439/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 17 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [be-style](https://appshunter.io/developer/534131442) | [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602) |

## What reviewers say

### 100 Squares Calc

[App page](https://appshunter.io/ios/app/100-squares-calc/id534131439)

Practice basic math operations with timed challenges and progress tracking. Offers various modes, keyboard types, and mini-games to enhance learning and identify weak points. Supports Bluetooth keyboards and printing custom questions.

**Highlights:** Multiple math operation modes, Customizable keyboard types, Bluetooth keyboard support, Progress tracking and analytics, Study and edit modes, Mini-games for practice, Prefecture-based ranking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Color Customization | $1.99 | one-time |
| Hide Ads | $3.99 | one-time |


### π ~ Pi Fun App.

[App page](https://appshunter.io/ios/app/pi-fun-app/id6566185298)

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

**In-app purchases:** none


## Frequently asked questions

### Is 100 Squares Calc free?

100 Squares Calc is free to download, with in-app purchases available.

### Is π ~ Pi Fun App. free?

π ~ Pi Fun App. is free to download, with no in-app purchases.

### Do 100 Squares Calc or π ~ Pi Fun App. have ads?

Both 100 Squares Calc and π ~ Pi Fun App. show ads.

### Which is updated more often, 100 Squares Calc or π ~ Pi Fun App.?

100 Squares Calc ships an update monthly, and π ~ Pi Fun App. every 2 days. Most recently, 100 Squares Calc was updated on November 1, 2026 and π ~ Pi Fun App. on October 27, 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.*