# π Pi Challenge vs Docker道場 − 図で学ぶコンテナ入門

The clearest difference is ads: Docker道場 − 図で学ぶコンテナ入門 at none against π Pi Challenge's shown. Docker道場 − 図で学ぶコンテナ入門 also leads on update cadence (every 4 weeks vs every 2 months). π Pi Challenge's advantage is iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. π Pi Challenge sells 1 in-app purchase, starting at $0.99 per month and Docker道場 − 図で学ぶコンテナ入門 sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

π Pi Challenge ships an update every 2 months, Docker道場 − 図で学ぶコンテナ入門 every 4 weeks. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | π Pi Challenge | Docker道場 − 図で学ぶコンテナ入門 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Size | 73 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SIC Company Limited](https://appshunter.io/developer/1800842356) | [MASAKI TAKEMOTO](https://appshunter.io/developer/6792427282) |

## What reviewers say

### π Pi Challenge

[App page](https://appshunter.io/ios/app/pi-challenge/id6756227034)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |


### Docker道場 − 図で学ぶコンテナ入門

[App page](https://appshunter.io/ios/app/docker/id6792427280)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| レベル5 実務シナリオ編 | $1.99 | one-time |
| 広告非表示 | $2.99 | one-time |


## Frequently asked questions

### Is π Pi Challenge free?

π Pi Challenge is free to download, with in-app purchases available.

### Is Docker道場 − 図で学ぶコンテナ入門 free?

Docker道場 − 図で学ぶコンテナ入門 is free to download, with in-app purchases available.

### Do π Pi Challenge or Docker道場 − 図で学ぶコンテナ入門 have ads?

π Pi Challenge shows ads; Docker道場 − 図で学ぶコンテナ入門 does not.

### Which is updated more often, π Pi Challenge or Docker道場 − 図で学ぶコンテナ入門?

π Pi Challenge ships an update every 2 months, and Docker道場 − 図で学ぶコンテナ入門 every 4 weeks. Most recently, π Pi Challenge was updated on October 31, 2026 and Docker道場 − 図で学ぶコンテナ入門 on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*