Jerry your Savvy Senior here. I design, develop and implement applications for the Raspberry Pi line of single board computers. The applications all have a similar design and format. They are very structured, and intuitive. Once you learn one you will know how to operate any of the others. I live by “The Process is the Product” methodology that I have developed over the years. My applications are modular so if you need an additional capability adding one is relatively straight forward. RBP application are totally self-contained you own it all. There are no subscriptions, You own and possess your data and it never leaves your possession. RBP systems are designed to grow with you. They can be multi-user if you require. It truly is a “Business in a Box”