Colorful Calculator is an Android-based calculator app developed by Stan Studios. It is a free app that falls under the category of utilities and tools, and it offers a range of features that make it stand out from other calculator apps.

The app offers two modes, traditional and formula, to cater to different calculation needs. It also supports the use of percentage (%) and displays the complete formula on top in formula mode. The app has an intelligent automatic correction feature that corrects input errors, such as automatically filling in right parentheses.

Colorful Calculator also supports drop-down display history and allows users to paste on lucky icons or custom icons. The buttons can be set to vibrate or beep, and the app can keep the screen on. It also supports landscape screen and automatically adjusts the font size of the screen. With 4 button skin options, users can choose their favorite color and customize the app to their liking.

Overall, Colorful Calculator is a vibrant and feature-packed calculator app that offers a range of functionalities to make calculations easier and more convenient. If you enjoy using this app, you can show your support by purchasing the Donate version from the developer.