チャット日記 vs DiaryThreads
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
チャット日記
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毎日つづく、いちばん気軽な日記。 チャット日記は、LINEでメッセージを送る感覚で、ひとことだけ書けば日記になるアプリです。「今日はいい天気だった」「ラーメンがうまかった」——それくらいの短い一言でOK。自分の吹き出しがチャット風に並んで、記録が会話ログのように育っていきます。 日記が続かないのは、書くのがめんどうだから。だからチャット日記は「続けやすさ」だけを考えて作りました。起動したらすぐ入力欄。長い文章はいりません。1日に何度書いても大丈夫です。 ■ こんなことができます ・チャット風にひとことを送るだけの、かんたん記録 ・写真もいっしょに残せる ・カレンダーで振り返り。書いた日にはしるしがつきます ・「1年前の今日」「1か月前の今日」で、過去の自分に再会 ・その日を星やレーダーチャートで評価(気分・睡眠・仕事など、項目は自由に作れます) ・連続記録(ストリーク)で、書く習慣が身につく ■ プライバシーはしっかり ・4桁パスコード+Face ID / Touch IDでロック ・日記の内容と写真はすべて端末の中だけに保存。サーバーには送りません(アプリ改善のための匿名の利用統計のみ送信。設定でオフにできます) ・アカウント登録・ログインは不要 ■ バックアップも安心 ・日記データはJSON / Markdownで書き出せます 肩の力を抜いて、今日のひとことから始めてみてください。
DiaryThreads
Transform your life into a series of shareable posts, just like social media. Capture thoughts, photos, videos, or voice notes in short entries organized into a private timeline. Gain insights into your journaling habits and revisit memories with customizable widgets.
- Post thoughts, photos, videos, voice notes
- Private timeline organization
- Insights into journaling habits
- Home Screen widgets for memories and new posts
- App Lock for enhanced privacy
- No account required, local storage
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DiaryThreads offers a new way to journal: capture life as easily as posting and let every entry become part of a timeline that is entirely your own. 【As Easy as Posting—Reply to and Quote Your Past Self】 -- Capture a thought, a photo, or a voice recording in the moment. A flexible editor helps you preserve life in richer detail. -- Find an earlier entry, reply to it or quote it, and see what has changed. -- When you have more to say, use an Article to publish a polished long-form card on your timeline. 【Understand Your Life】 -- Analytics brings together days recorded, total characters, posting frequency, and changes over the last 30 days. -- Your private trending list highlights the keywords and topics you have been returning to lately. -- State of Mind entries you choose to add also appear in Analytics, helping you look back on emotional changes. -- Topic Insights show when and how often each topic appears. 【Let Widgets Bring the Past Back】 -- The “Random Entry” widget brings an older entry to your Home Screen. Tap to shuffle or open its details. -- The “Write an Entry” widget puts writing on your Home Screen, so a new entry is always one tap away. Past and present stay close at hand. -- The “Photo Memory” widget brings treasured photos back into view. 【Light, Simple, and Entirely Yours】 -- DiaryThreads requires no account. Content is stored locally first; Premium can sync it across your Apple devices through your private iCloud. -- No ads, third-party analytics, or cross-app tracking. -- Premium imports and exports are processed locally on your device, keeping your content in your hands. 【Diary Threads Premium】 -- The free version keeps up to 30 current entries. -- Diary Threads Premium unlocks unlimited entries, share posters, keyword trends, private iCloud sync, local import and export, and all three Home Screen widgets. -- Premium is available as a monthly or annual subscription, or as a one-time lifetime purchase. Actual prices are shown in the App Store. Privacy Policy: https://foggy-bellflower-ae3.notion.site/Diary-Threads-Privacy-Policy-3aa1a28522d98112b480d81a7b2f74db?source=copy_link EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: チャット日記 at none against DiaryThreads's 3. チャット日記 also leads on iOS requirement (16.4 vs 18.0). DiaryThreads's advantage is update cadence (every 2 days vs every 3 months). 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. DiaryThreads sells 3 in-app purchases, starting at $2.99 per month. チャット日記 asks for nothing beyond the download.
チャット日記 ships an update every 3 months, DiaryThreads every 2 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | チャット日記 | DiaryThreads |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 30 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuuki Nishimura | 世杰 戴 |
In-app purchases
チャット日記
No in-app purchases
DiaryThreads
- Monthly Premium$2.991 Month
- Yearly Premium$8.991 Year
- Lifetime Premium$14.99









