The idea is simple: write down workout data on paper with special markup, and then transfer them in the app by taking a pic of this piece of paper. There are two options to get this special marked-up paper. First, you can download a pdf template and print it. Second, you can buy one of the notepads that we produce. All links are below.
Below is a gallery that shows the main steps of this transfer process, which we call scanning.

Under the gallery, you can find a link to an article with detailed template filling recommendations. For now, the scanner is not super clever and works only with neat handwriting, where each character is separated from another.