Got questions about Orpheus? You're in the right place!
Yes. You will require an internet connection to access files stored on Dropbox.
This was not always the case. More info here.
The first time you load a chart, Orpheus saves a copy to your local cache. This allows much faster access to that chart in subsequent viewings. When you make annotations, they are stored as a separate layer in the cache and do not affect your original copy of the chart on Dropbox.
Any changes you make on Dropbox will be pulled down to the app next time you open the chart.
Cache Everything Now Option
If you expect to be using Orpheus to access Dropbox files a lot and want to speed up the loading, go to Settings where you will find a handy option for “Cache Everything Now”. Do this at a time/place where you have a good WiFi connection. It will do exactly like it says – cache all your files.
In this way you can be confident your charts have all been cached, and will therefore load quickly in the future without any delay.