AI Diary vs OneDay日記
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI Diary
This simple diary app allows you to automatically analyze your written entries to track your moods. You can also manually input daily scores and easily edit or delete past entries. A search function helps you find specific memories.
- Automatic mood analysis
- Manual daily score input
- Easy diary editing
- Swipe to delete entries
- Search past diaries
- Simple and intuitive interface
Read full descriptionHide full description
It is a diary application that can automatically analyze written sentences and register moods. Of course, it is an application that you can also enter the score of the day yourself. Very simple diary app, easy to operate. Just select the date you want to write and write a diary for that day. Then, use the emotion measurement button to sequence emotions or adjust the slider and enter the mood score for the day. Select a diary from the list to see your diary and mood for that day. If you want to rewrite, you can also edit from the edit button. If you want to delete a diary, just swipe from the list and press the delete button. It also has a search function, which is useful for searching past diaries. Please try using it!
OneDay日記
This app allows users to create and share personal diaries with others. You can choose to keep your entries private or make them visible to a community, with view counts displayed. It offers customization for your profile and is completely free to use without ads.
- Shared diary functionality
- View counts for entries
- Private journaling option
- Profile customization (name, icon)
- Backup feature available
- Completely free to use
Read full descriptionHide full description
◆共有日記アプリの特徴 その名の通り、共有機能があります。 閲覧回数も見えるようになっています。 もちろん共有せず、読み専(ROM)でもOKです。 他の人の日記を参考にして自分の経験として吸収するのもOKです。 また、メールアドレスを登録すると、 共有時に表示される名前とアイコンを設定することができます。 広告も入れていません。完全にフリーです。安心してお使いください。 ※注意事項※ ①日記を共有する場合は、人物/場所が特定できるような誹謗中傷などはご遠慮ください。 ②現在バックアップ機能はありません。 →version1.4よりバックアップ機能を追加しました。
Screenshots
Verdict
The clearest difference is ads: OneDay日記 at none against AI Diary's shown. OneDay日記 also leads on review sentiment (67% vs 33%) and monetization model (free vs ad-supported). AI Diary's advantage is update cadence (fortnightly vs every 7 months) and iOS requirement (12.0 vs 15.6). 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.
AI Diary ships an update fortnightly, OneDay日記 every 7 months. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.
| Parameter | AI Diary | OneDay日記 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | 66.7% of reviews — better |
| Update frequency | Fortnightly — better | Every 7 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 27 MB | 42 MB |
| Age rating | 4+ | 17+ |
| Developer | kazuhiro aonuma | Hiroki Sato |
Customer experience
AI Diary
OneDay日記
In-app purchases
AI Diary
No in-app purchases
OneDay日記
No in-app purchases
