NexusDiary - 開発者向けAI日記

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Everyone
10+
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About this app

NexusDiary is an "AI diary app" that lets you quickly record your daily thoughts and insights in a Twitter-like style.

It's a diary tool for individual developers that uses AI to analyze your written diary entries and suggest "the next app you should create" based on your potential interests and challenges.

■ Recommended for:

・Individual developers and engineers who want to jot down ideas

・Those who want to develop a diary habit but can't stick with it

・Those who want to find product ideas from their interests and challenges

■ Main Features

【Record your diary】
You can easily record your thoughts in a short-post style similar to Twitter.
Written diaries are saved to the cloud (Firebase) and synchronized across multiple devices.

【AI automatically suggests tags】
The AI ​​analyzes your posts and automatically suggests relevant tags.

It learns from tags you've used in the past, creating organized records without inconsistencies in terminology.

【AI suggests app development ideas】
The AI ​​deeply analyzes your recent diary entries and suggests specific "apps you should create" based on your potential worries and desires.

It generates the app name, overview, problem solved, main features, and development start prompt.

[Customize with 5 Themes to Suit Your Mood]
Includes 5 themes: Monochrome / Printed Text / Terminal / Aurora / Sepia.
Switch the appearance to suit your mood each day.

■ About Data
Diary data is stored in Firebase Firestore and securely managed with your Google account.
AI analysis is processed on the server side, and the API key is not included in the app.

■ About Ads
This app displays ads (Google AdMob).
The AI ​​suggestion feature is free up to 3 times a day.
From the 4th time onwards, it can be used after watching an ad.

■ For those searching with these keywords:
Diary app / AI diary / Diary / Daily record / Memo app / Idea notebook / Personal development / Engineer's diary / Thought organization / Journal
Updated on
Apr 3, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
This app may collect these data types
Personal info and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

What’s new

日常の思考や気づきをTwitter感覚で気軽に書き溜めると、AIがあなたの興味・悩みからアプリ開発アイデアを自動で提案します。

✨ 主な機能
・日記をテキスト+タグで気軽に記録・編集
・タグによる素早い絞り込み検索
・AIによるアプリ開発アイデア自動提案
・10種類のデザインテーマ(一部は動画広告で解放)
・Googleアカウントでクラウド同期
・複数アカウントの切り替えに対応

ご意見・不具合報告は設定画面のフィードバックフォームよりお気軽にどうぞ。
Content rating
Everyone
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App support

About the developer
RYO-LAB.
support@ryo-lab.dev
1-1-18, ISOBEDOORI, CHUO-KU CASABELLA KOKUSAI PLAZA BLDG. 707 KOBE, 兵庫県 651-0084 Japan
+81 70-8447-4073