Scanner Pro by Readdle lets you take photos of your documents and scan them into shareable attachments in a matter of seconds. It's been one of our favorite scanner apps for a long time due to the great image quality and great interface. With version 5.1, scan quality is better than ever.
I've had the opportunity to test out and use Scanner Pro 5.1 for a while now. I've used to scan some documents in a few different lighting conditions and each and every time, documents came out great.
Since I've used Scanner Pro for quite a while, I had the opportunity to compare newly scanned documents with images I've scanned in the past with older versions of Scanner Pro. While both images produced perfectly acceptable documents, there is a noticeable difference in text sharpness and overall clarity in images scanned with 5.1. It's especially noticeable with smaller print.
Whether you're debating on document scanner apps or aren't happy with your current solution, it doesn't get much better than Scanner Pro. It's also on sale for 50% off for a limited time.