16文字日記 vs One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
16文字日記
This app allows users to record their daily thoughts and memories using only 16 characters. It's designed for those who find long journaling difficult or are short on time, making it easy to maintain a daily record and review past entries.
- 16-character daily entries
- Monthly calendar view
- Writing reminders
- Passcode lock
- Easy to continue daily
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長文を書かなくていい、16文字だけの日記アプリ。 1日ひとことで残せるから、日記が続かない人でも気軽に続けやすい。 思いついたらすぐ書けて、あとで月ごとの一覧から見返せます。 16文字日記は、 「日記を書きたいけど長くは続かない」 「その日のことを少しだけ残したい」 そんな人のための、短文特化の日記アプリです。 ・長文を書くのがしんどい ・忙しい日でも少しだけ記録したい ・あとで気軽に振り返りたい ・1日を16文字以内でシンプルに記録 ・月ごとの一覧で日々の記録を見返せる ・リマインダーで書き忘れをやさしくサポート ・パスコードロックで安心して残せる たくさん書かなくていいから、続けやすい。 16文字だけで、毎日の思い出を気軽に残してみてください。
One
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One-Line Diary is a simple journaling app that lets you easily capture your daily thoughts and moments in just a few words. With the calendar view, you can look back on past entries and quickly see how many posts you made on each day at a glance. The built-in report feature helps you review and visualize your records, making it easy to notice changes in your feelings and habits over time. Designed with a clean and distraction-free interface, the app lets you focus entirely on your thoughts without interruption. Why not start recording small daily insights and emotional changes at your own pace?
Screenshots
Verdict
The clearest difference is ads: One at none against 16文字日記's shown. One also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (13.0 vs 15.0). 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.
16文字日記 ships an update every 2 months, One every 3 days. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.
| Parameter | 16文字日記 | One |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Kenta Fukushima | Yuga Matsumi |
In-app purchases
16文字日記
No in-app purchases
One
No in-app purchases
