A free program for Android, by In TechLab.

Doc Sign: Digital Signature is a free app for signing digital documents. You can use it to sign the email and other agreements or to create a digital signature for your own documents.

You can also use it to sign PDF documents. It is very easy to use, and you don’t need to know any coding language. All you need is your phone, a compatible camera, and a piece of paper.

The app has a very intuitive interface, so you will not need to learn anything new. You can create a signature in a very easy way. First, select a style from the available ones. Next, select a background color or an image from the gallery. You can also draw on the selected area to add more details. Once you are done, you can save it and share it with your friends.

Doc Sign: Digital Signature will save the signature you create, so you will not need to save it to your phone or tablet. You can use it for as long as you want.

The app is free, but you can use it to sign the most popular document types.