Under its somewhat crude and ugly interface we will find a really powerful professional tool, distinguished due to the fact that it works with HDR (High Dynamic Range), and use up to 128 bits per pixel and devote to a 32-bit floating point to each color component, that offers thousands of millions of color levels and avoids quality loss after the enhancements.
Despite its small size, Rainbow Painter has the same features as the most advanced photograph editors. Advanced drawing tools, capacity to work with layers and a list of effects among which we will find some that only this application offers.
It also stands out due to its method to create patterns and textures in real-time, and its original way to customize and configure its windows. The worst score for this software is the aesthetic of its interface, that in reality it stands out due to how easy it makes working with the application.
A real jewel to edit images that will surprise both photographers as well as enthusiasts alike.