Mongle Haru
A sticker diary for how you really feel
One minute before bed.
One sticker. A few words. That's enough.
One minute before bed.
One sticker. A few words. That's enough.
Some days are just hard. Your feelings are all tangled up, and the words won't come. You don't want to do anything at all — but you don't want this feeling to just disappear, either.
Mongle quietly asks, "Hey, how was your day?"
One line is fine. Just a sticker is fine too.
Your pace is the right pace.Because the best diary is one you actually keep.
Happy / Excited / Tired / Sad / Low Energy / Anxious / Angry / Not sure
Even when you don't know what you're feeling, that's okay.
"Not sure" is a valid feeling too.
8 weather types + 8 conditions.
Capture the vibe of the day — and how your body was doing, too.
Up to 5,000 characters — short or long, whatever feels right.
Photos, timestamps, alignment, fonts, and text size are all up to you.
Stickers fill up your calendar, day by day.
See an entire month at a glance — no scrolling needed.
What mood showed up the most this month?
Distribution charts, top 3 moods, day-of-week trends, streaks.
There's something comforting about seeing your own patterns.
Find past entries by keyword in seconds.
Browse a full month of entries in list view.
Google Drive backup and iCloud sync keep your entries safe.
Export a month of diaries as a PDF — a little keepsake of how you felt.
Light or dark mode, theme colors, fonts, text size.
Available in 14 languages.
A daily nudge at whatever time you choose.
Each one a little different, a little warm.
"Hey, you made it through today. Want to jot something down?"
Check in with your mood without even opening the app.
Your diary stays yours. Lock it with a tap — your space, your rules.
The more you write, the more Mongles you meet.
Categories, rarity levels — a small reward for showing up.
The moment you sit with your feelings matters. We won't interrupt it. That's a promise.
Mongle Haru isn't made by a company. It's built by a solo developer in Korea. It started with a simple thought: "What if writing could bring someone a little comfort?" It's not perfect yet. But it gets a little better every day.