I need a (iPhone, iPad) standalone app that does one thing and one thing only: allow smooth doodle on a plain white background and save it to photo album. This may sound easy if you have already done so or knew how to accomplish this. Then it shouldn't take you long. Otherwise, it is NOT as easy as you think. Definition of smooth drawing:
1. Curve is like a curve, circle is like a circle, no lagging
2. The color of the pen can be changed later easily
3. The size of the pen can be changed later easily
4. I need the ability to convert this app into a function call
5. I need to see it in action before final approval
A good example of how smooth it is -> download the app ArtStudio. Obviously I don't need 99.99% of the features with ArtStudio, I just need a good quality drawing. Another example of a smooth drawing -> download the app Penultimate. There are tons of drawing apps that can do smooth drawing. If you have an app like that, send me the link with proven credential. I will be happy to download it and see if you qualify.
Again, I don't expect someone who has no code experience in the area of drawing. Basically, we are very experienced programmers, but we are currently need this routine quickly. We do not have time to develop this routine.