Try it free first
It costs nothing to install and start using. Take your time with it, and buy inside the app only if you need more.
Download
Install it and start using it
Free to download on iPhone, iPad, and Android.
Pick an app
Which one first?
All three are live on the App Store and Google Play.
Ō Camera
FreeA high-quality camera with no shutter sound. Just shooting.
iPhone · iPad · AndroidReleased December 9, 2025
Budget
FreeA budget app that skips the categories and just shows your balance
iPhone · iPad · AndroidReleased January 13, 2026
Mobu
FreeA simulator for buying and selling Seoul apartments using real transaction data
iPhone · iPad · AndroidReleased March 19, 2026
Good to know
Before you install
One account, at most
Only Mobu asks you to sign in. Ō Camera and Budget work the moment you install them.
No full-screen ads
We never cover your screen and make you hunt for the X.
Try an app that does less
Three different problems, one set of rules for solving them.