OPT!M is a practical Android application designed for creating order lists for your desired products. By selecting items within the app and generating an order list, you can conveniently make purchases by presenting the QR code at the point of sale. The process is straightforward and streamlines your shopping experience.

To use OPT!M effectively, start by launching the app and checking in near the designated area. Once there, you can add products to your list, create an order, and generate a QR code for purchase directly on your smartphone. Finally, at the local counter, present the QR code, exchange it for the products, and complete the transaction seamlessly.