8 Types ：8項目の性格診断 vs Aiiro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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。
Aiiro
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Answer a few questions and discover your personality type — and who you click with. Aiiro AI16 is a personality typing and compatibility app built on the 16-type model. The test runs as a conversation with an AI character, so it feels far lighter than filling in a questionnaire. WHAT YOU CAN DO • 16-type personality test: 12 questions to find your type • Type library: read the traits of all 16 types any time • Compatibility check: pair your type with someone else's and see how you match • Love style test: put words to how you behave in relationships • Cognitive functions: a deeper look at the thinking patterns behind your type • Daily fortune: changes every day, per type GREAT IF YOU • Want to know your personality type • Are curious about compatibility with friends, partners or family • Need language for describing yourself • Just enjoy personality-type talk LANGUAGES: English, Japanese, German, French, Italian, Spanish, Arabic, Simplified Chinese, Traditional Chinese, Thai No sign-up, free to use. This app is for entertainment only. It is not a psychological assessment and not a medical service. Enjoy the results as a starting point for self-reflection.
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Verdict
8 Types ：8項目の性格診断 and Aiiro 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.
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.
8 Types ：8項目の性格診断 ships an update every 2 months, Aiiro every 3 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | 8 Types ：8項目の性格診断 | Aiiro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 52 MB | 66 MB |
| Age rating | 12+ | 17+ |
| Developer | Sae Ueno | Kyosuke Takahashi |
In-app purchases
8 Types ：8項目の性格診断
No in-app purchases
Aiiro
No in-app purchases
Questions
Is 8 Types ：8項目の性格診断 free?
Is Aiiro free?
Do 8 Types ：8項目の性格診断 or Aiiro have ads?
Which is updated more often, 8 Types ：8項目の性格診断 or Aiiro?
Other comparisons
