Power Stone vs 8 Types ：8項目の性格診断
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Power Stone
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.
- Charmstone identification
- Ten-question quiz
- Personalized stone recommendations
- User-friendly interface
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Don't know what your charmsotone is? This charmstone finder will help you. Just answer the ten questions and you will find your best stone.
8 Types ：8項目の性格診断
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貴方は社交的？現実主義？ 自分のことを詳しく知りたい、そんな時は8 Typesを使って診断してみましょう。8 Typesでは8種類の性格それぞれについて質問に答えることで、性格の傾向を知ることができます。 8 Typesを使うことで・・ ・自分の強みが分かるようになる ・少し前の自分と性格を比較できる ・友達と性格について語り合える シンプルに、性格が診断できるデザインにしました。 ぜひお気軽に診断してみてください。
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Power Stone | 8 Types ：8項目の性格診断 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 67 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 52 MB |
| Age rating | 4+ | 12+ |
| Developer | ZOOMO, Inc. | Sae Ueno |
In-app purchases
Power Stone
No in-app purchases
8 Types ：8項目の性格診断
No in-app purchases
Questions
Is Power Stone free?
Is 8 Types ：8項目の性格診断 free?
Do Power Stone or 8 Types ：8項目の性格診断 have ads?
Which is updated more often, Power Stone or 8 Types ：8項目の性格診断?
Other comparisons
