✨ Capture your life, one line at a time.

OneLine Journal is a beautifully minimalist diary app designed to make journaling effortless, consistent, and meaningful. Instead of writing endless paragraphs, you only write one line per day — a single thought, emotion, or moment that defines your day. Over time, AI helps you uncover deep emotional patterns, mood trends, and personal growth insights.

🪶 Why OneLine Journal?

Most people give up on journaling because it feels like a chore.
OneLine Journal changes that — it turns journaling into a tiny daily habit that takes less than 30 seconds, yet brings lasting mindfulness and self-awareness.

Whether you’re tracking your emotions, noting daily highlights, or simply reflecting on life, OneLine Journal becomes your personal memory timeline — light, beautiful, and intelligent.

🌙 Core Features (Free Plan)

🗓️ One line per day journaling – Write just one sentence daily and build a habit you can actually sustain.

📅 Timeline & Calendar view – Easily scroll through your entries and see your emotional journey unfold.

🪄 Clean, minimalist design – Distraction-free interface focused on simplicity and clarity.

☁️ Real-time cloud sync (Supabase) – Your data is instantly saved and synced securely — no mock data, only real user accounts.

🔐 Private & secure login – Sign in using Google or email; all your entries are encrypted and stored safely.

💾 Automatic backup – Never lose a single thought or memory.

🌈 Custom themes – Choose between calm light, soothing dark, or focus mode themes to match your mood.

📱 Cross-device access – Seamlessly journal on your phone, tablet, or laptop.

🤖 Premium Plan – AI-Powered Journaling

Upgrade to unlock the full power of AI reflection and analysis.
Our advanced AI companion reads between the lines, helping you understand your emotions, habits, and mental patterns.

Premium Features Include:

🧠 AI Journal Assistant – Summarizes your daily entries into short emotional overviews.

💬 Smart Writing Prompts – Personalized, thought-provoking questions that help you write more meaningfully.

📈 Mood & Theme Tracking – AI detects emotional keywords and shows long-term trends in charts.

📊 Weekly & Monthly Insights – Get automatic summaries of your mindset and emotional balance.

🌤️ Sentiment Evolution Graphs – Visualize your ups and downs with elegant AI-generated reports.

🔔 Daily motivation & reminders – Stay consistent with smart, adaptive notifications.

💡 Reflection Mode – AI highlights recurring thoughts or goals you mention over time.

✨ Premium Themes & Widgets – Unlock aesthetic layouts, mood colors, and dashboard widgets.

🧩 Technology & Security

Built with modern tools like Supabase and Next.js, OneLine Journal ensures:

🔒 End-to-end encrypted journaling

⚡ Fast, real-time database synchronization

🌍 Global data availability with scalable backend

🚫 No mock data, no placeholders — only real, authenticated users

Your data belongs only to you. We don’t track, sell, or share any of your content.

🌱 How to Use OneLine Journal

Open the app each day.

Write one short line describing your day, emotion, or event.

The AI analyzes it and adds it to your mood timeline.

Watch your emotional growth and recurring themes emerge.

That’s it — your entire journaling routine in under a minute.
Over weeks and months, you’ll begin to see how your emotions shift, what influences your mindset, and what makes you happiest.

💬 Perfect for:

People who want to build a mindful journaling habit

Those who struggle to stay consistent with long diaries

Anyone interested in AI-powered emotional insights

Users seeking minimal, private, and aesthetic productivity tools