# プロセス・ディフェンス vs Summon Busters

プロセス・ディフェンス and Summon Busters are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

プロセス・ディフェンス ships an update weekly, Summon Busters every 2 weeks. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | プロセス・ディフェンス | Summon Busters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/summon-busters/id6449024984/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Ad-supported |
| Size | 81 MB | 128 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Chikai Ito](https://appshunter.io/developer/1480561746) | [Keisuke Tanaka](https://appshunter.io/developer/1518566368) |

## What reviewers say

### プロセス・ディフェンス

[App page](https://appshunter.io/ios/app/id1592811050)

**Features:** macOS Compatibility

**In-app purchases:** none


### Summon Busters

[App page](https://appshunter.io/ios/app/summon-busters/id6449024984)

Engage in a deck-building rogue-like where you summon diverse characters to battle abstract "Concepts". Strategically choose from three random characters, collect items to enhance them, and build unique decks across 20 stages to achieve victory.

**Highlights:** Deck-building rogue-like gameplay, Summon over 60 characters, Collect and use 45 items, Strategic character enhancement, 20 stages of combat, Create original concept decks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is プロセス・ディフェンス free?

プロセス・ディフェンス is free to download, with no in-app purchases.

### Is Summon Busters free?

Summon Busters is free to download, with no in-app purchases.

### Do プロセス・ディフェンス or Summon Busters have ads?

Both プロセス・ディフェンス and Summon Busters show ads.

### Which is updated more often, プロセス・ディフェンス or Summon Busters?

プロセス・ディフェンス ships an update weekly, and Summon Busters every 2 weeks. Most recently, プロセス・ディフェンス was updated on October 27, 2026 and Summon Busters on October 7, 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.*