This app is a great free scanner. I havent used the premium version that costs money to compare, but this one does the trick for sure. You can scan whatever you want (pdf/jpeg) and have it saved as a document or picture. You can email these files, save them to your camera, and more.
The quality is as good as your camera. You can keep it in full color, enhanced, or have it set to black and white which will minimize graininess and save ink if you plan on printing.
Only reason I give this 4/5 instead of 5 stars is because I havent been able to compare it to the full version that costs money- the free version of the app is great on its own.
Only thing Id maybe like is the option to encrypt or require a passcode/touch id to access your docs- that option comes with the version you purchase. It is fine with me though because my phone requires a passcode/touch id to get into it so thats more than enough for me.
Kirstie F. about Scanner App: Genius Scan, v3.10.2