Popup Memo is a free memo application developed by Mu Hwan Kim for Android devices. It falls under the Business & Productivity category and boasts of being fast, simple, and useful.

The app's standout feature is its accessibility. Users can easily access the app by sliding down the notification bar and clicking on the Popup Memo icon. The interface is clean and straightforward, making it easy for users to create and save memos quickly.

Popup Memo does not offer many customization options, but it does allow users to change the color of the memo and the font size. Additionally, the app does not require any special permissions, making it a secure option for users.

Overall, Popup Memo is an excellent choice for users who need a reliable and straightforward memo application. Its accessibility and ease of use make it a great option for those who need to take quick notes on the go.