4 color standard calculator application.

Need a hard calculator?
It is a simple calculator that maximizes the convenience of users by putting in only the necessary functions.

- It is a calculator that can be changed to various colors with one click at any time according to the mood.
- Users who want a neat calculator without the need for many complicated functions!
- Users who want a typo-free calculator with large buttons.

We will establish ourselves as a representative of calculators that anyone can use conveniently.

[Required permission information]
Storage space: Required to save and retrieve calculation results from internal storage space
Phone: Device ID is collected to uniquely identify the user, and is required for member management, etc.

[Optional permission information]
Phone access authority: Collects your contact information and transmits it to the calculator server, which is used for AlimTalk and notification notifications to users registered in your contacts.