チャットAI vs Plainify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
チャットAI
This AI-powered chatbot provides instant, accurate responses to any question. Easily accessible on your smartphone, it supports Japanese and helps improve your writing skills. Experience the power of AI for conversation and assistance.
- Advanced AI for instant answers
- Japanese language support
- Improve writing skills
- Easy smartphone access
- AI-powered conversations
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■ なんでも答えてくれる最先端のAI ■ スマホで簡単！日本語にも対応しているので安心です ■ 話題沸騰！AIとトークができる チャットボット「Chat AI」で、AIのパワーを体験しよう！ AIの支援を借りて、すぐに正確な応答を得て、文章力を向上させましょう。 このアプリは、AIを活用したチャットアプリです。スマホで簡単に利用でき、日本語にも対応しています。人工知能がどんな質問にも答えてくれます。
Plainify
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[Transform Complex Text into Plain, Easy English] "Kamikuda" uses cutting-edge AI to convert and summarize difficult news, official documents, and complex contracts into "Plain English" that anyone can understand. ■ Recommended for: When news articles are too dense and hard to follow. When you want to understand formal jargon in government or medical documents. When English learners want to study by breaking down advanced vocabulary. When you need to summarize long texts for a quick read. ■ Key Features AI "Kamikuda" Simplify: Simply copy-paste or type text, and the AI will analyze the context to "break it down" into easy-to-read language. Camera OCR (Optical Character Recognition): Snap a photo of documents or books to instantly digitize and simplify the text. AI Chat Consultation: Ask follow-up questions about the simplified content or request different ways to rephrase it. Multi-language Support: The app supports multiple languages including Japanese and English, serving as a global reading support tool. ■ Our Vision Language is full of complex expressions that can prevent important information from being understood. "Kamikuda" aims to remove these barriers using AI, creating a world where information is accessible to everyone. Note: This app uses advanced AI like the Gemini API to ensure high accuracy. However, for critical legal or medical documents, please always cross-reference with the original text.
Screenshots
Verdict
The clearest difference is in-app purchases: Plainify at none against チャットAI's 1. Plainify also leads on update cadence (every 5 days vs every 3 weeks). チャットAI's advantage is ads (none vs shown). On price, device support and iOS requirement 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. チャットAI sells 1 in-app purchase, starting at $2.99 per 7 days. Plainify asks for nothing beyond the download.
チャットAI ships an update every 3 weeks, Plainify every 5 days. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.
| Parameter | チャットAI | Plainify |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 11 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Akihiro Kokubo | Kasanimaro |
In-app purchases
チャットAI
- Premium3 Days trial$2.997 Days
Plainify
No in-app purchases
