# Power Stone vs 8 Types ：8項目の性格診断

The clearest difference is ads: Power Stone at none against 8 Types ：8項目の性格診断's shown. 8 Types ：8項目の性格診断's advantage is update cadence (every 2 months vs every 67 months) and iOS requirement (12.0 vs 14.0). On price, in-app purchases and device support there is nothing between them.

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

Power Stone ships an update every 67 months, 8 Types ：8項目の性格診断 every 2 months. The most recent releases landed on July 26, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Power Stone | 8 Types ：8項目の性格診断 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/power-stone/id532068372/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 67 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 11 MB | 52 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [ZOOMO, Inc.](https://appshunter.io/developer/490112424) | [Sae Ueno](https://appshunter.io/developer/1598709865) |

## What reviewers say

### Power Stone

[App page](https://appshunter.io/ios/app/power-stone/id532068372)

Discover your ideal charmstone by answering a series of ten questions. This intuitive tool guides you to find the stone that best suits you based on your responses.

**Highlights:** Charmstone identification, Ten-question quiz, Personalized stone recommendations, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### 8 Types ：8項目の性格診断

[App page](https://appshunter.io/ios/app/8-types-8/id1603334014)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Power Stone free?

Power Stone is free to download, with no in-app purchases.

### Is 8 Types ：8項目の性格診断 free?

8 Types ：8項目の性格診断 is free to download, with no in-app purchases.

### Do Power Stone or 8 Types ：8項目の性格診断 have ads?

8 Types ：8項目の性格診断 shows ads; Power Stone does not.

### Which is updated more often, Power Stone or 8 Types ：8項目の性格診断?

Power Stone ships an update every 67 months, and 8 Types ：8項目の性格診断 every 2 months. Most recently, Power Stone was updated on July 26, 2026 and 8 Types ：8項目の性格診断 on September 15, 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.*