That is what this app tries to do. There will be no dry rules or table of conjugations. Rather every bit of grammar or vocabulary will be embedded in sentences, very simple sentences at first but then adding more and more complexity. The final aim of this application is to build enough structure (both grammar and essential vocabulary) that you can at some point continue this journey alone, adding knowledge to a very solid base.
This app will concentrate on Spanish that will be used in all Spanish speaking countries, so pronouns like 'vosotros' or 'vos' will not be used, as they are not used in all the countries.
Lastly, I would appreciate feedback to my email, especially about bugs. I put a lot of effort in the language apps that I am developing, but I don't have the resources to test on all devices and configurations.