# 雑学クイズ王 vs Brain Flipper

The clearest difference is in-app purchases: Brain Flipper at none against 雑学クイズ王's 1. Brain Flipper also leads on ads (none vs shown) and update cadence (every 3 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 雑学クイズ王 sells 1 one-off in-app purchase. Brain Flipper asks for nothing beyond the download.

雑学クイズ王 ships an update every 4 months, Brain Flipper every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 雑学クイズ王 | Brain Flipper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 3 days** |
| Size | 29 MB | 3 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Techsence inc.](https://appshunter.io/developer/1692020336) | [Satoshi Ishiwata](https://appshunter.io/developer/1876108945) |

## What reviewers say

### 雑学クイズ王

[App page](https://appshunter.io/ios/app/id6755246533)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Removal | $2.99 | one-time |


### Brain Flipper

[App page](https://appshunter.io/ios/app/brain-flipper/id6758971094)

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

**In-app purchases:** none


## Frequently asked questions

### Is 雑学クイズ王 free?

雑学クイズ王 is free to download, with in-app purchases available.

### Is Brain Flipper free?

Brain Flipper is free to download, with no in-app purchases.

### Do 雑学クイズ王 or Brain Flipper have ads?

雑学クイズ王 shows ads; Brain Flipper does not.

### Which is updated more often, 雑学クイズ王 or Brain Flipper?

雑学クイズ王 ships an update every 4 months, and Brain Flipper every 3 days. Most recently, 雑学クイズ王 was updated on October 30, 2026 and Brain Flipper 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.*