1日1行日記 vs DayDot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
1日1行日記
Read full descriptionHide full description
毎日たった一行。それだけで、あなたの日々は特別になります。 「一行日記」は、40文字以内のひとことで1日を振り返るシンプルな日記アプリです。長い文章を書く必要はありません。今日あった嬉しかったこと、食べたもの、ふと思ったこと——たった一行で記録しましょう。 --- 主な機能 --- シンプルな日記 1日1行、40文字以内で記録。余計な機能はなく、書くことだけに集中できます。 AIイラスト生成 書いた日記から、AIが絵本風のイラストを自動生成。あなたの一行が、1枚の絵になります。 レポート&カレンダー 記録した日がひと目でわかるカレンダー表示。連続記録や総記録数を確認して、モチベーションを維持できます。 毎日のリマインダー 好きな時間に通知を設定。日記を書く習慣づくりをサポートします。 クラウド同期 Apple ID・Googleアカウントでログインすれば、データを安全にバックアップ。機種変更しても安心です。 --- こんな方におすすめ --- 日記を続けたいけど、長文は面倒な方 毎日を少しだけ振り返る習慣をつけたい方 日記にイラストを添えて、楽しく記録したい方 シンプルで使いやすいアプリが好きな方 一行から始まる、あなただけの日記。 今日の一行を、書いてみませんか?
DayDot
Read full descriptionHide full description
One line a day. That's it. DayDot is a journal for people who never keep a journal. No blank page staring back at you, no streak guilt, no 20-minute ritual. One honest sentence about your day, one tap for how you felt, and you're done in ten seconds. Over time those single lines turn into something you can actually read back — and into patterns you couldn't see while living them. WHAT'S FREE, FOREVER • Unlimited entries — write as often as you like • One-tap mood, with a mood label for every entry • Your last 30 days, browsable by calendar • This week's mood chart • Export everything to CSV or JSON, any time DAYDOT PRO • Your full history, beyond 30 days • Year in Pixels — your whole year as one grid of colour • Monthly reports, with your streak and your best day • Mood Connections — which activities and which weather actually move your mood • Recent patterns — a short read on how your last two weeks went • Voice entries, mood doodles, up to 3 photos per entry • Time capsules — write to yourself, delivered months from now • Watermark-free sharing PRIVATE BY DEFAULT No account. No ads. No tracking. Your diary lives on your device, and iCloud sync is off until you turn it on — and even then it goes to your own private iCloud database, readable only by you. You can export everything and walk away whenever you want. Widgets and Siri: log a mood from your Home Screen or just say it out loud.
Screenshots
Verdict
The clearest difference is in-app purchases: 1日1行日記 at none against DayDot's 3. 1日1行日記 also leads on update cadence (weekly vs every 3 weeks). On price, ads, 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. DayDot sells 3 in-app purchases, starting at $2.99 per month. 1日1行日記 asks for nothing beyond the download.
1日1行日記 ships an update weekly, DayDot every 3 weeks. The most recent releases landed on September 16, 2026 and September 22, 2026 respectively.
| Parameter | 1日1行日記 | DayDot |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Rikuto Sato | 子皓 庞 |
In-app purchases
1日1行日記
No in-app purchases
DayDot
- DayDot Pro$2.991 Month
- DayDot Pro7 Days trial$19.991 Year
- DayDot Pro — Lifetime$9.99








