I have Paperpile for Android installed on an e-ink device, and whilst it works, the reading/annotating experience is naturally not as optimal as using the device’s own PDF viewer. So I would really like the option to download a PDF and have the possibility to use another app for the editing, and have Paperpile manage the upload etc. I don’t know if this is a common use case, but as more and more Android based 10 and 13" e-readers are available, I can see an increasing need…
Thanks for all your hard work!