Ease of use, it's free to download & easy for my students who are not tech savvy at all! I have been using this software since last year in class with primary school kids (5-10 years old). It has helped them understand how computers work by recording their actions or clicks they do while playing games such as Minecraft etc., which was very useful when explaining concepts like mouse click/keyboard shortcuts during lessons about computer science topics e g file management system folders files programs applications operating systems storage devices memory usage processes security features.