Its a simple app, not a ton of options (even for straightforward things like colors and like thickness), but it has an unbearable bug, where *every* time it is closed and reopened, it forgets all of its settings, and I have to link Dropbox, enter my name for annotations, choose my colors, dismiss the apps usage hints, etc. all over again.
Note that the developer response invites me to contact support about this issue, but that page clearly states that I should not expect to receive a response!
uh_bill about Adobe Acrobat Reader: Annotate, Scan, & Send PDFs, v17.07.25