Ghosts who make apps
Cute little apps
that are actually useful
On days you don’t feel like studying, a little ghost studies right next to you. On days your heart feels fuzzy, it listens to how your day went. We draw and build every app ourselves — and we’re still making more.
Study with me?
- apps released on Google Play
- 20
- downloads of Study Time With Rain (Google Play · App Store)
- 700K+
- ratings for Study Time With Rain (Google Play · App Store)
- 6.6K+
our apps
Things we’ve made
Study Time With Rain
700K+ downloadsStudy alongside a little ghost on a rainy day — Pomodoro and regular timers, study stats, rain sounds and D-day countdowns.
GhostDiary
★ 4.8A mood diary calendar where a ghost butler helps you log how you feel — with stats, memos and a fortune cookie every morning.
404Log - Crush Diary
★ 4.8A private diary for the crush you haven’t told anyone about.
할말없어요 (Nothing to Say)
★ 4.5Conversation starters, balance games and personality talk for when you run out of things to say.
And a few more
Rainy Day of Butler
Unwind with the butler on a rainy night
The Last Leaf - LifeCountdown
See how much time you have left
Turtle in turbo mode
To-do list & scheduler
16 People - Personality Test
An AI personality test with Dr. Rabbit
Earthworm with Rain
Rain & sleep sounds
Terru - Couple Challenge
A couple diary for counting down to your next date
Happy cat meme game
Happy cat meme arcade game
Tanghulu
Stack as many as you can — then eat!
Duzonku Game
Made by a dev who’s never tasted one
Ghost Jump Rope
Jump rope with the ghost butler
Kpop Wordchain
K-pop idol word chain game
Lucky Pick - Fortune Telling
A little word of comfort every morning
Thrift King
Broke now, billionaire in training
축의금얼마내 (Gift Money Guide)
How much to give at a wedding?
졸업토익 (TOEIC Graduation)
Finish TOEIC in one go
빈대 지도 (Bedbug Map)
Mapping Korea’s bedbug scare
about us
A small team, a little ghost, quite a few apps
Studying, journaling, crushes, sleep, things to talk about — whenever we spot a moment that makes us think “there should be an app for this,” we draw it, build it and ship it.
We reply to reviews ourselves and fold your feedback into the next update. Cute gets you to open an app once; useful brings you back every day. We want both.
ghostdiary (유령일기) is an independent app studio founded in South Korea in 2023 by Yoonjik Cho and Hayoung Lee, publishing on Google Play and the App Store.
The people behind the ghost
- Co-founderYoonjik Cho (조윤직)
- Co-founderHayoung Lee (이하영)
contact
Send a letter to the ghost
Partnerships, collaborations, or just app talk — anything’s welcome. We’ll reply within 1–2 business days ( ˘ ³˘)♥
contact@rainghost.com