I teach electronic engineering in college. I was looking for a circuit simulator on iPad to quickly design small circuits. This tool is intuitive, easy to use, and compact. In minutes I was up and running. I like the meters, the oscilloscope and the real time features. I dont expect this tool to be a industrial ruggedized design tool but for student and educators who want to go one step further than the blackboard this is an excellent partner. I am hopeful that this tool will continue to improve from this excellent baseline. I hope to find tutorials, ways to reach for help, and the ability to type and enter device parameters. Overall I am very pleased with my small investment and would not hesitate to recommend this tool for better understanding of basic electronic, and digital circuits.