Comparison

3つのいいこと vs Three Seeds

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

3つのいいこと

Features
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「3つのいいこと」は、毎日寝る前に「その日にあったいいこと」を3つ書くだけのシンプル日記アプリです。 ポジティブ心理学の「3 Good Things」エクササイズをベースに作られました。1週間続けると幸福度の向上、3ヶ月続くと効果が定着すると言われています。 ■ 主な機能 ・1日3つだけ書ける、シンプルな入力画面 ・写真を最大3枚まで添付(思い出として一緒に保存) ・気分マーク(5段階の絵文字で今日の気分を記録) ・タグ機能(家族・仕事・健康など10種類) ・「1年前の今日」「1ヶ月前の今日」を振り返るカード ・気分の推移グラフ(30日折れ線) ・週間まとめ・季節と年間の振り返り ・カレンダーで過去の記録を振り返り ・連続記録ストリークと今月・累計の表示 ・寝る前のリマインダー通知(時刻設定可) ・データのバックアップ(JSON)と思い出冊子(PDF) ・アプリロック(Face ID / Touch ID / パスコード) ・ゴミ箱機能(30日間保持) ・5色のカラーテーマ ・優しい暖色系のデザイン(夜の使用に最適) ・ダークモード対応 ■ こんな方におすすめ ・最近、心がしんどいなと感じる方 ・寝る前のスマホ習慣を変えたい方 ・続けやすい日記を探している方 ・気持ちの記録を残したい方 ■ プライバシー 書いた内容はすべて端末内にのみ保存されます。外部サーバーへの送信・アカウント登録は不要です。 ■ ご注意 本アプリは医療機器・治療を提供するものではありません。心の健康に関するご相談は専門医にご相談ください。

About

Three Seeds

Features
Read full description

A gratitude journal that writes back. Every day, note 3 good things that happened. Once a day, AI reads them and replies with a few warm sentences about your day - not a score, not a summary. Small things count. "The morning coffee was great" is more than enough. Research suggests that keeping up this tiny habit can raise your sense of well-being (Seligman et al., 2005). No ads. No account. No tracking. Your entries stay on your device. ◆ Write 3 good things a day - Three simple fields — small things count, even one is fine - Mood tags and photo attachments - Gentle writing prompts that change every day ◆ A warm word from AI - Once a day, AI reads your three things and replies with warmth - Not a summary or a score — a companion who savors your words with you - Weekly and monthly AI reviews to look back on your patterns ◆ Watch your record grow - Streaks, mood charts, and a calendar of your entries - A word cloud of the things you write about most - "A year ago today" and "This day last month" cards ◆ Your data stays yours - Everything is stored on your device - Optional automatic backup to your own iCloud - No ads, no tracking SDKs - Export as text, Markdown, JSON, or shareable images ◆ Also in Japanese - The app follows your device language (English / Japanese) - AI replies in your language too Start planting three small seeds a day, and grow a record that is truly yours.

Screenshots

3つのいいこと4 screens
Three Seeds4 screens

Verdict

The call

The clearest difference is iOS requirement: Three Seeds at 13.0 against 3つのいいこと's 15.1. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 5 level
3つのいいこと versus Three Seeds: the parameters behind the verdict, then further details
Parameter3つのいいことThree Seeds
PriceFreeFree
Update frequency—Every 6 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size28 MB38 MB
Age rating4+4+
DeveloperShogo OshimaAtsushi Matsunami

In-app purchases

None

3つのいいこと

No in-app purchases

None

Three Seeds

No in-app purchases

Questions

Is 3つのいいこと free?
3つのいいこと is free to download, with no in-app purchases.
Is Three Seeds free?
Three Seeds is free to download, with no in-app purchases.
Do 3つのいいこと or Three Seeds have ads?
Neither 3つのいいこと nor Three Seeds shows ads.

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