Učni listi za vse razrede Osno is a free educational application designed for primary school children. It offers a collection of worksheets that aim to test and improve their knowledge in various subjects. The app is available on Android platform and is developed by ARcom Alojz Rakovec s.p.

The app is an excellent resource for children who want to learn something new or test their knowledge in various subjects. It offers a wide range of worksheets covering different topics such as mathematics, science, geography, and more. The app is easy to use, and children can easily navigate through the worksheets and select the ones they want to work on.