CADO is an interesting app in development I stumbled across a while ago. There are some great CAD apps out there on both iOS and Android, but I’ve yet to see one that allows you draw with ease. I’m not the only one that noticed this, the people behind CADO felt the same!
The app is being developed for iOS at the moment, but if it is successful, they hope to develop for Android also. Check out their Kickstarter page and support the project if you feel the same way!