Great app, the tutorials are fantastic with great concise content. The option of further reading is perfect with external links to more detailed information. I have recommended this to my team. Well done, a great addition to the Lean community. I am looking forward to the paid ad free version.Very useful for industrial person, I have learn mostly used topics in this app. Love the way it explained. Calculator area cover all things which needs in an industry for calculations. Pipe & fitting, fasteners are very much easy to get their dimensions.Love the way this app explained about an industry. get all details about an industry. Its process, tool calculation i.e. nut, bolt, fasteners dimensions. Thanks you so much learn industrial team.. No.1 app for an industrial person.