Handy Scanner 91 is an Android application developed by STW Services LLP. It falls under the category of Utilities & Tools and is available for free. The app allows you to scan documents or a set of documents with your camera or choose them from the gallery and convert them into PDF files.

The interface of the application is user-friendly and easy to navigate. It offers various features such as auto-cropping, image enhancement, and multi-page scanning. The app also allows you to adjust the brightness and contrast of the scanned documents.

Overall, Handy Scanner 91 is a useful application for individuals who need to scan and convert documents into PDF files on the go. The app provides a simple and efficient way to digitize your documents, making it a must-have for anyone who needs to scan documents frequently.