日本語AIチャット vs Hey AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
日本語AIチャット
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今、世界中で話題のChatGPT-3.5とスマホで簡単にチャットをすることができます。無料で使い始めることができて、利用制限のない有料版もたった月額350円で利用可能です。 API経由での利用のため、通常のChatGPT無料版で懸念として挙げられる、投稿内容が学習データに利用される心配もありません。また、セキュリティを重要視して、サーバー等への応答内容の保存は一切しておりません。ですので、安心してご利用いただけます。 ■■■ 有料版について ■■■ 無料版では初日10往復、その後1日1往復のAIとのやりとりができます。まずは無料版で使っていただき、気に入れば有料版をご検討ください。 ●有料版: 月間払い 350円 / 月 有料版に加入すると、無制限でAIとの会話をお楽しみいただけます。 ●機種変更時の復元 機種変更時には、以前購入した有料版を無料で復元できます。(『設定』ページから)購入時と同じAppleIDでiPhone・iPad端末のiTunesにログインしていてください。 ●確認と解約 AppStoreアプリの最下部にある「おすすめ」を選択—> Apple IDを選択—>「Apple IDを表示」を選択—> 購読の中にある「管理」から『MobileGPT』を選択。この画面から次回の自動更新タイミングの確認や、自動更新の解除/設定ができます。 ●自動継続課金について 期間終了日の24時間以上前に自動更新の解除をされない場合、契約期間が自動更新されます。自動更新の課金は、契約期間の終了後24時間以内に行われます。 ●注意点 ・アプリ内で課金された方は上記以外の方法での解約できません ・当月分のキャンセルについては受け付けておりません。 ・iTunesアカウントを経由して課金されます。 ●利用規約 https://b12r.net/terms ●プライバシーポリシー https://b12r.net/privacy
Hey AI
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Hey AI is a free AI chat app that runs on your device. No account, no API key, no subscription. Just open it and ask. Answers come from the on-device model of Apple Intelligence, so replies are fast with no server to wait for, and chatting works even offline. For questions that need the latest information, Hey AI searches the web. ■ FREE, NO SIGN-UP No account to create and no API key to set up. Start talking the moment you open the app. ■ FAST, EVEN OFFLINE Answers are generated by the AI on your device. With no server to wait for, replies come quickly, and you can keep chatting on a plane or wherever there's no signal. Your conversations are never used to train AI, and your chat history stays on your device. ■ UP-TO-DATE ANSWERS FROM THE WEB For questions that need current information, like "What's the weather in New York tomorrow?" or today's exchange rate, Hey AI can search the web with your permission and answer with sources you can open. Only short search keywords are sent, never your full conversation. You can turn this off anytime in Settings. ■ ASK ABOUT PHOTOS (iOS 27 or later) Attach a photo and ask "What is this?" or "How do I cook this?" Photos never leave your device. ■ TALK WITH SIRI AND SHORTCUTS Say "Hey Siri, Hey AI" to ask without opening the app. After the answer, say "Continue" to keep the conversation going. Chats are searchable in Spotlight too. ■ SPEAKS YOUR LANGUAGE Hey AI answers in the language of your message. You can also choose a fixed answer language in Settings. ■ EASY TO USE • Answers appear as if they're being typed, and you can stop them anytime • Get started with example questions • Follow-up questions understand the conversation so far • Keep a history for each chat and delete what you don't need ■ GREAT FOR • Writing and rewriting emails and messages • Summarizing and translating text • Recipes, ideas, and everyday questions • Quick facts, weather, and news from the web ■ REQUIREMENTS A device that supports Apple Intelligence (iPhone 15 Pro or later, iPad and Mac with M1 or later, and more) running iOS 26, iPadOS 26, or macOS 26 or later, with Apple Intelligence turned on in Settings. Asking about photos requires iOS 27 or later. Note: AI answers and information from the web may be inaccurate. For important decisions about health, legal, or financial matters, please consult a professional.
Screenshots
Verdict
The clearest difference is in-app purchases: Hey AI at none against 日本語AIチャット's 1. 日本語AIチャット's advantage is iOS requirement (16.2 vs 26.0). On price, ads 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. 日本語AIチャット sells 1 in-app purchase, starting at $1.99 per month. Hey AI asks for nothing beyond the download.
| Parameter | 日本語AIチャット | Hey AI |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 21 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 22 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Chisa Kubo | SoyApps |
In-app purchases
日本語AIチャット
- 月額プレミアム機能$1.991 Month
Hey AI
No in-app purchases







