I wanted to vote, but I hesitated. There is no information what the platform Codema.in is. Why is it necessary to create an account anyway? You could also (additionally) create a poll here in Mastodon.
BTW:
1. Pure Maps (I use it on a UBPorts /Ubuntu Touch smartphone and I am generally very happy with it)
2. Gnome Maps (I use it on the desktop, but I have no experience how well it works on smartpones)