I have used Intsig software for applying OCR in English and other languages. The results were so accurate that there was no look back to search for other OCR software.

This is by far the best application to scan documents from your phone. The quality of the scanned photo is very clear. After taking the photo from your phone you can crop it easily by stretching the boundaries and after that there are many options to enhance the quality of the image like No shadow, Original, Lighten, Magic Colour, Grey Mode and B&W. I generally use the No shadow or Magic Colour which are the best. Another great feature is that you can create PDFs by making a document of the photos you have clicked. You can also store and arrange your personal documents in this application by creating folders like ID Cards , Business Documents etc. The documents are also instantly stored on their cloud facility which keeps them stored and secured even if you loose your phone. It is also very easy to share the scanned documents via E-Mail, Whats App or any other Social media platform. The interface is great and easy to operate. The speed of the application is great and lag free. The developer gives out regular updates and bug fixes as well. There are also features like OCR, Barcode scanner, PDF Compressor, Excell to PDF convertor and vice-versa in this application. There is a premium and business platform in the application with great benefits. Premium customers can get more cloud storage , you can also add your signature or water marks to your documents. Also the CamScanner watermark is not shown on PDFs for premium customers.

I like CamScanner as it makes scanning of documents easy and sharing as well as storage of documents is also convenient.