# バター猫オセロ vs Keepsweeper

The clearest difference is in-app purchases: バター猫オセロ at none against Keepsweeper's 1. Keepsweeper's advantage is ads (none vs shown) and update cadence (daily vs every 4 days). On price and device support there is nothing between them.

Both are free to download. Keepsweeper sells 1 one-off in-app purchase. バター猫オセロ asks for nothing beyond the download.

バター猫オセロ ships an update every 4 days, Keepsweeper daily. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | バター猫オセロ | Keepsweeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (42 ratings)](https://appshunter.io/ios/app/keepsweeper/id6814857804/reviews)** |
| Number of ratings | — | **42** |
| Positive reviews | — | 90.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 37 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Eiki Ogawa](https://appshunter.io/developer/1701253076) | [Flarup Industries](https://appshunter.io/developer/6790582309) |

## What reviewers say

### バター猫オセロ

[App page](https://appshunter.io/ios/app/id6760817704)

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

**In-app purchases:** none


### Keepsweeper

[App page](https://appshunter.io/ios/app/keepsweeper/id6814857804)

Engage in strategic kingdom building combined with Minesweeper-style deduction. Uncover tiles, develop your settlement, and explore hidden treasures. Choose from multiple quest paths or compete with friends in multiplayer modes.

**Highlights:** Minesweeper-style tile deduction, Real-time kingdom building, Economic simulation, Multiple quest paths, Offline play, Online multiplayer, Map editor

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $4.99 | one-time |


## Frequently asked questions

### Is バター猫オセロ free?

バター猫オセロ is free to download, with no in-app purchases.

### Is Keepsweeper free?

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

### Do バター猫オセロ or Keepsweeper have ads?

バター猫オセロ shows ads; Keepsweeper does not.

### Which is updated more often, バター猫オセロ or Keepsweeper?

バター猫オセロ ships an update every 4 days, and Keepsweeper daily. Most recently, バター猫オセロ was updated on October 24, 2026 and Keepsweeper on October 31, 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.*