This app was mentioned in 6 comments, with an average of 1.83 upvotes
BW-go is my favorite Android sgf editor/reader. Go GridMaster is ok too. It's still a bit awkward to navigate variations in either.
You need to provide your own sgf's though.
I use BW-Go(Click for link). There's a plugin on the same page for gnugo which you'll need to play against the AI. I think this is the paid version, but I believe there's a free version too.
BW-Go is works well for recording games. It has a button that lets you delete the current move and all following moves, which helps cleaning up misclicks quickly.
BW-go is my favorite
https://play.google.com/store/apps/details?id=mco.prj.app.bwgo
Have you given BW-Go a go? It's no SmartGo but it's the closest I've found on Android.
https://play.google.com/store/apps/details?id=mco.prj.app.bwgo