InversionLetter vs 16タイプ診断
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InversionLetter
This app allows users to invert and rotate text messages, then send them as images via email. It offers options to change characters, tilt, and invert text, with various font choices.
- Invert characters
- Rotate text
- Send as image via email
- Change characters
- Tilt and invert options
- Font selection
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You can invert the entered characters , and can rotate. You can send by e-mail as an image . [ Operation ] Q: I want to change the previously entered characters A: Select the character you want change, you can change at each button . ( Tilt and inversion , fonts can be changed )
16タイプ診断
Discover your personality through a 16-type assessment. Get detailed analysis, identify strengths and weaknesses, and receive advice for personal growth and relationships. Start your self-discovery journey for free.
- 16 personality type assessment
- Detailed personality analysis
- Identify strengths and weaknesses
- Relationship insights
- Personal growth advice
- Quick and easy questionnaire
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「16タイプ診断アプリ」へようこそ！このアプリは、あなたの個性を深く理解するための強力なツールです。16の異なる性格タイプに基づく診断を通じて、自分自身の強みや弱み、対人関係での傾向を明確に把握できます。 診断は簡単で、数分の質問に答えるだけで、詳細な性格分析が得られます。さらに、診断結果には、自己成長に役立つ具体的なアドバイスや、職場やプライベートでの人間関係を円滑にするためのヒントが含まれています。 自分自身をよりよく知り、日常生活やキャリアの選択に活かすために、ぜひこのアプリを活用してください。未来の可能性を広げるための第一歩を、今すぐ踏み出してみませんか？無料でお試しいただけますので、まずは診断して、自分の本当の姿を発見しましょう！
Screenshots
Verdict
The clearest difference is ads: 16タイプ診断 at none against InversionLetter's shown. 16タイプ診断 also leads on update cadence (monthly vs every 17 months) and monetization model (free vs ad-supported). InversionLetter's advantage is review sentiment (15% vs 0%) and iOS requirement (10.3 vs 17.4). 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.
InversionLetter ships an update every 17 months, 16タイプ診断 monthly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | InversionLetter | 16タイプ診断 |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 15.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 17 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 10.3 — better | 17.4 |
| Further details — not scored | ||
| Size | 26 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | EIICHI KOMINE | Takumi Yoshikoshi |
Customer experience
InversionLetter
16タイプ診断
In-app purchases
InversionLetter
No in-app purchases
16タイプ診断
No in-app purchases
