VividMono can perform one-point color filter processing. The required steps are just two steps. There is no need for difficult operations. You can easily get impressive pictures.

Step 1. Paint the area you want to show vividly with a pen
Step 2. Tap "ON" to process

function
・ Photo capture from camera or library
・ Tracing mask with your finger
・ Pen width change of mask
・ Undo, Redo
・ Execution of monochrome filter
・ Cancellation of filter
・ Save image