3LINE Diary

Three lines are enough.

⭐ Google Play Featured App (2018 · 2019 · 2020)
A gentle space to pause, reflect, and stay present.

Life moves fast.
Days pass before we even realize it.

3LINE Diary helps you slow down —
just enough to capture what mattered today.

No pressure.
No long writing.
Just three lines.

✍️ Capture your day in three lines and one photo

3LINE Diary is a simple yet powerful journaling app
that helps you record your day with three lines of text and a single image.

Create multiple diaries to reflect different parts of your life —
your thoughts, relationships, goals, memories, and growth.

Keep your diary private,
or share it anonymously and connect with others through stories that feel real.

🤍 A community built on real stories

Read and connect with touching moments from people around the world.
Different lives. Different days. Shared humanity.

Discover honest, anonymous public diaries

Leave likes, comments, and bookmarks

Join themed communities and write together

Share thoughts on relationships, hobbies, books, K-pop, daily life, and more

Writing doesn’t have to be lonely.
Here, it’s something we do together.

👥 Shared diaries, shared moments

Write a diary with someone you love.

Partners

Friends

Family

Long-distance relationships

Record memories together.
Leave messages for each other.
Turn everyday moments into shared keepsakes.

💭 Why we believe in writing

At 3LINE Diary, we believe that
writing — and sharing — is an act of self-love.

Taking a moment to write about your day may seem small,
but it’s a way of saying:

“This moment mattered.”
“I mattered.”

Your words become a record of who you were —
for the future you.

🌱 Recommended for people who want to…

keep a simple record of thoughts and feelings

feel more gratitude in everyday life

reduce stress and anxiety

track goals and habits

preserve personal milestones

journal with friends or a partner

practice creative writing

find a writing community

🛠 Key features

Secure pin lock for private diaries

Save diary entries as images

Custom reminder notifications

Write entries for past dates

Write more than three lines whenever you want

🌍 Community features

Share diaries publicly while staying anonymous

Like, comment, and bookmark entries

Explore diverse lives through public diaries

Join interest-based writing communities

🤝 Shared Diaries

Write together with friends, family, or partners

Record meaningful moments side by side

Stay connected, even across distance

✨ 3LINE Diary FRIENDS Membership

Download your diaries as PDF books

Choose from thousands of images

Decorate entries with stickers

Express emotions with 다양한 fonts

Start writing today.

Three lines are enough.

About us

willim Inc. believes in building a world filled with sincerity.
Capture your life in three lines. Share your story with 3LINE Diary.

Business Name: willim Inc.

CEO: Bae Joonho

Company Registration Number: 341-81-00628