Thank you for your post. There is no difference between versions of the app in regards to zoom levels as this is controlled by the map import itself. With the app, there is the option to import maps using high resolution, which can improve the zoom levels possible, however, this is primarily controlled with the original map file itself and how it was produced (e.g. resolution, dimensions, etc.). Unfortunately, there are no guidelines that we can provide that will give you the 0.10m detail, as it varies across maps.
In regards to your second question, in order to collect data, you do require a map to collect the data on.
Please note that if you are using the app for commercial purposes, you do require a Pro license for each device in use. If you would like more information regarding our subscriptions, please feel free to reach out to our Sales Team directly.
If you require any further assistance regarding the app, please feel free to contact our Support Team through the form at help.avenzamaps.com