Best app for ideation sketches for designers

I tried so many other apps but this is the best one for quick ideation sketches. I use other full-on drawing/painting apps for renderings but the work flow is too slow for quick ideation sketches. Handwriting notebook apps are also awesome for creative note taking with lots of thumbnail sketches, but none of them are good enough for real sketching. SketchTime hits the sweet spot by giving me the perfect combination of work flow speed and pen quality. Interface is so simple, intuitive and thoughtful for quick work flow. Pens and markers flow fast and smooth, and options for pen sizes and colors are really good. Having "multiply" and "screen" options for markers are really nice touch of thoughtfulness. There is still some room for improvement such as slightly glitchy palm rest and potentially limiting color palette, but I can easily work around those for now, and the app still gives far better quality and efficiency than any other apps which are two most important things in my work. Look forward to future updates to make this app even better!! Oh, Id like Dropbox and Evernote integration in a future.

y///i about SketchTime - Quick Sketching & Photo Tracing