ひとこと日記 vs Chat Journal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ひとこと日記
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ひとこと日記は、毎日の気分をたった140文字で記録するシンプルな感情日記アプリです。 【基本機能(無料)】 ・毎日の気分を5段階で記録 ・140文字のひとこと日記 ・写真の添付 ・16種類の活動タグ ・天気の自動記録 ・今日のお題(書くヒント) ・リマインダー通知 ・Face ID / Touch IDロック ・ウィジェット対応 【Pro(買い切り)】 ・30日以上の全履歴閲覧 ・気分推移グラフ(30日) ・曜日別分析 ・CSVエクスポート ・全テーマ解放(8種類) ・Year in Pixels 全期間表示 【Premium(年額・7日間無料体験)】 ・Proの全機能に加えて: ・タグ相関分析(活動と気分の関係) ・感情安定度スコア ・未来の気分予測 ・iCloudバックアップ 続けるほど、自分の感情パターンが見えてきます。 まずは無料で、今日のひとことから始めましょう。 利用規約: https://hitokoto-nikki.github.io/terms プライバシーポリシー: https://hitokoto-nikki.github.io/privacy
Chat Journal
Effortlessly log your daily activities, thoughts, and health data by simply texting or speaking. This app organizes your entries into a readable timeline and offers AI assistance for summaries and content polishing.
- Log entries via text or voice
- AI-powered sorting and summaries
- Customizable alarms with gentle songs
- Keyboard for logging from any app
- 13 log categories including health data
- Timeline view with calendar
- Cozy planet game with cat companion
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Just text Romi like you would a friend. "Had curry for lunch", "Walked 5,000 steps", "Went to bed late again" — Romi sorts each message into your diary so you can confirm it with one tap. No forms, no blank pages. ◆ Chat to Log Your diary looks like a messenger. Send a message and Romi turns it into entries: meals, mood, sleep, steps, purchases, notes and more. You check them in a list before they're saved. On devices with Apple Intelligence, Romi also chats back. The AI runs on your device. Tap the mic to speak instead of typing, or send a photo to save it as a photo entry. ◆ Alarms Just text "Wake me up at 7:00 tomorrow" or "Wake me at 6:30 every day" and Romi sets the alarm. Repeat every day or on weekdays, and pick a gentle song if you like. When you stop it, Romi says good morning. ◆ Mina, Your Secretary Ask Mina for today's summary, a look back at your week, or tomorrow's plans, or tell her a plan to add. She answers from your own entries. Free for everyone. ◆ Keyboard: Log From Any App Type as usual in Messages, Notes or anywhere else, switch to the Chat Journal keyboard, and tap "Log with Romi". The next time you open the app, Romi sorts it for you to confirm. On devices with Apple Intelligence, the keyboard can also polish what you wrote: make it polite, make it casual, or proofread it. The keyboard never connects to the internet. Full Access is only used to pass your note to this app on the same device. ◆ 13 Log Categories Memo, Mood, Photo, Steps, Sleep, Purchase, Meal, Exercise, Weight, Reading, Water, Medicine and more. Import steps, sleep and weight from Apple Health with a tap. ◆ A Timeline You'll Want to Reread Your days flow into a timeline with morning, afternoon and evening bands, photos and a monthly calendar. ◆ Plans & Lists Keep plans with reminders and repeat schedules, save books and movies you want to see, and collect songs, links and notes in your lists. ◆ Meet Romi Your cat companion has 43 expressions and speaks 35 languages. Earn badges for streaks and milestones, and listen to 26 built-in songs or your own music while you log. ◆ Free to Start No account needed. Your entries sync across your devices with iCloud. Use 7 categories for free, or unlock 11 or all 13 with a one-time purchase. Privacy Policy: https://keik.co.jp/logmi/privacy-en.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: ひとこと日記 at none against Chat Journal's shown. Chat Journal's advantage is update cadence (every 5 days vs every 2 weeks). On price, in-app purchases, 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. ひとこと日記 sells 2 in-app purchases, starting at $9.99 per year and Chat Journal sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
ひとこと日記 ships an update every 2 weeks, Chat Journal every 5 days. Both last shipped on October 31, 2026.
| Parameter | ひとこと日記 | Chat Journal |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 131 MB |
| Age rating | 4+ | 4+ |
| Developer | Shun Kawasaki | KeiK LLC |
In-app purchases
ひとこと日記
- ひとこと日記 Premium$9.991 Year
- Pro$9.99
Chat Journal
- 6 Category Slots$1.99
- Full Unlock$4.99









