uSketch 4+

Amazing app - particularly LOVE the choice of sketch filters - much broader than in several paid apps. Love, love, love everything about it except seems to have a bug that precludes saving at the moment. Hopefully it’ll get fixed soon. Sometimes can email it to myself, sometimes that bugged out too. Get around with a screen shot for the moment...

This is a great tool for learning to draw. Take a simple photo and select a sketch version like Suppresion or Graphic pen. Save to your desktop and then using a paper sketchpad and art pencil copy what you see. The transformation from photo to sketch highlights the light and dark gradient differences that enables pencil sketching to communicate a lot of content with relatively few lines. It helps the learner focus on the underlying structures and shapes without the distraction of color.
Get it for kids, get it for yourself. If you've always wanted to learn how to draw, this simple to use tool will help you learn to see what to draw.

Can't thank you enough for this great app.

I have no idea how they were abble to obtain ANY of their examples. Outline WITH colors, impossible!
The sketch efects listed on the right were mostly solid black or solid white. At best, a few had tiny wisps of line segments.
3 “sketch” effects at the bottom of the list did do something, but they were preset and unable to customize them with the effects on the left, nor alter the intensity of their effect.
As such, the effects on the left did nearly nothing unless you were messing with the original “normal” image. Even then, all the effects on the left were very generic, many sliders had no effect; didn’t work.
I used a variety of images (all jpegs), light, dark, color, B&W….Nothing!

Here, you get everything you pay for.
I’m wondering how much they paid for the 5-stars in 50+ comments.
I’ve been doing consumer art since Commodre 64.

Conclusion:
Not one effect or combination of effects and “sketches” here is capable of creating any kind of “sketch” unless you create your art on drugs. Very useless efects found on any $15 mobile phone…. no, wait… most of the effects on those phones actually work.