SikkuKolam Studio
Design your own threshold
Tap the gaps to shape the line. The counter tells you how many separate lines you have. When it says 1, you have a true sikku kolam. Then switch to Pour colour and fill the spaces like rangoli powder.
Brush
Quick start
Line colour
Rangoli powder
Tap any space between the lines to pour. Colours follow the spaces, so you can go back and reshape the lines afterwards.