DickM
SILVER Star
Just started this recently, but the way I understand it is that you can have unlimited maps on your Avenza app on your mobile device as long as they are from the Avenza store (and you have enough memory available on your device). Unless you upgrade to the paid version of Avenza, you can only have three outside-sourced maps on your device at a time. But, you can download any number of GeoPDF maps and store them in a folder on Dropbox. Only three at a time can be on Avenza at any given time, but they are sitting there in Dropbox and you can close one then open another one as needed.