For Reels · Shorts · TikTok
Don't overthink it. Just give Mongle Haru a small, natural moment in the content you already make — that's more than enough.
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These aren't requirements — just ideas. Pick only what you like and show it your own way.
Show a moment of writing a letter and waiting for a reply. Use a sample letter and let viewers know replies are written by AI.
Replies are written by AI. The mailbox is for ages 14 and up and requires sign-in and stamps.
Discover the mailbox
Choose a country and show travel stamps building up as you journal. No real trip is needed.
Discover journeys
Pick a Mongle theme and add stickers. A quick before-and-after is a lovely way to show your page.
Explore stickers and themes03
Mongle Haru is a diary app, after all. Using example sentences instead of your real diary entries keeps your precious records safe.
Today was a little tiring, but I made it through, and that's enough.
It felt like an ordinary day, but writing it down made it feel a little precious.
Open the featured artwork for reference when introducing Mongle Haru. Record app screens in the current app.
Open featured artworkAbout Mongle HaruEveryone has those days. The day that was especially hard, the night when your feelings are so tangled you can't put them into words. When you don't want to do anything, but you still wish you could set this one feeling down somewhere.
Life brings happy days, sad days, frustrating days. We made Mongle Haru because we wanted a space where you can comfortably let those feelings out, without worrying about what anyone thinks.
'Mongle' is that feeling of being tucked snugly under a blanket — soft, cozy, reassuring. It's built by a single developer in Korea, with one hope at heart: that keeping a record can comfort someone, so the feelings of each day can stay soft and warm.
If that feeling comes through in your video, that's all we need. It doesn't have to be a big ad — just you, comfortably keeping a record of your day.
About Mongle Haru
You don't need to make it feel like an ad. Only three things are required — the app on screen, the #mongleharu tag, and a public video. For everything else, just show your day the way it is.
Thank you so much for being with Mongle Haru.
Because of the days you share,
someone out there will find the courage to write down their own.