How long will take to develop the app in your opinion, and how much money you will need for that? Maybe, it would be better to wait with the app?
Not long. We are using some blockchain but mainly Holochain. You can read about the advantages of Holochain in many places. The entire systems is created on Github but it will remain private for now because it needs to be fine tunes and we need to create the user interface for the desktop and mobile apps
Gary