私辞書 vs echor|Idea Notes, Book Quotes
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
私辞書
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私辞書は、言葉を記録し、自分だけの辞書をつくるアプリです。 覚えたい単語、心に残ったフレーズ、作品のタイトル、夢中になっているものやこと、気になるテーマ、読書中に出会った一節。 日々の中で出会った言葉を、自分なりの意味や説明と一緒に残していくことができます。 ただのメモとして書き残すだけではなく、辞書という形で記録していくことで、記録内容が自然と整理された状態で積み上がっていきます。 自分の中にある言葉を記録する。 自分の意味で表現する。 あとから見返し、変化があれば書き換える。 書き換える前の内容も、履歴として残せます。 そうして積み重なった記録は、自分だけの辞書になっていきます。 【こんな辞書を作ってみるのはいかがでしょう?】 ・生活の中で出会った大切にしたい言葉を集める辞書 ・星の名前を、その星に関する神話も絡めながら記録する辞書 ・研究のために読んだ論文で難しかった言葉をメモする辞書 ・読んだ小説や詩の一節から心に響いた表現を集める辞書 ・恋人の寝言を記録する辞書 ・子供のかわいい言い間違いを記録する辞書 ・日記やエッセイを書くための辞書 ーーーー 使い方に決まりはありません。 学びのために使ってもいい。 創作のために使ってもいい。 好きなものを集める場所にしてもいい。 ただ、ふと気になった言葉を残すだけでも構いません。 目まぐるしく過ぎていく毎日・ただ消費されていく効率社会の中で、好きなものや気になることを自分の言葉として積み上げていく。 私辞書は、その記録が自分に戻ってこられる場所になっていくように作った、言葉の記録アプリです。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
echor|Idea Notes, Book Quotes
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echor is a quiet note-taking app for saving ideas that come to you and lines that stay with you—without organizing them, so you can encounter them again someday. Folders aren’t your thing. Keeping notes neatly organized never lasts. Still, when a phrase comes to mind or a sentence feels worth remembering, you want somewhere to leave it without letting it disappear. That’s what echor is for. Most note apps are designed to organize information or help you work more efficiently. But not every thought can be categorized right away. An idea before it becomes a story. A line that lingers after a book or film. Something someone said that you can’t quite forget. A feeling you don’t yet have a name for. A seed of an idea that may become something someday. echor is a place to quietly leave those small fragments, without deciding where they belong. ■ Capture a thought as soon as it appears Save short lines and ideas the moment they come to you. ・Seeds for stories and creative work ・Lines from books and novels ・Dialogue from films and comics ・Fragments of conversation ・Late-night thoughts, unease, and realizations ・Quotes and phrases you want to revisit No folders or categories required. Leave a thought just as it is, before you organize it. ■ Rediscover words from your past Three of your saved entries appear unexpectedly in speech bubbles. Something your past self wrote may reach you differently now. New ideas may emerge from the unexpected combination of words shown together. Notifications can also bring back something you saved before. Not to remind you of a task, but to help you encounter a forgotten thought again. ■ Look back on what you’ve collected All the words you’ve saved are always available in one list. Even without careful organization, they gradually accumulate over time. When something no longer needs to stay, you can let it go. ■ Keep longer thoughts in Notes When an idea or piece of writing is too long for a short entry, you can keep it in Notes. A place for fragments, and a place to think a little longer. Both can live in the same app. ■ Copy, share, back up, and restore Copy saved words as text or turn them into an image to share. Backup and restore are supported, so your words can move with you when you change devices. You don’t have to write every day like a diary. You don’t have to organize everything neatly like a notebook. It doesn’t have to be productive like a work memo. The words you keep may one day trace the outline of who you are. echor is for people who want a quiet place to keep ideas, reading notes, film notes, quotes, and fragments of conversation together. Available in Japanese, English, Simplified Chinese, and Korean.
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Verdict
The clearest difference is in-app purchases: echor|Idea Notes, Book Quotes at none against 私辞書's 2. echor|Idea Notes, Book Quotes also leads on update cadence (weekly vs every 2 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. 私辞書 sells 2 in-app purchases, starting at $1.99 per month. echor|Idea Notes, Book Quotes asks for nothing beyond the download.
私辞書 ships an update every 2 weeks, echor|Idea Notes, Book Quotes weekly. The most recent releases landed on September 13, 2026 and September 9, 2026 respectively.
| Parameter | 私辞書 | echor|Idea Notes, Book Quotes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 | 15.1 — better |
| Further details — not scored | ||
| Size | 60 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | AOI EMURA | dannpen |
In-app purchases
私辞書
- 月額プラン14 Days trial$1.991 Month
- 年額プラン14 Days trial$22.991 Year
echor|Idea Notes, Book Quotes
No in-app purchases





