Pretty good.
This app was pretty nice. The maps were high-quality and easy on the eye. However, note that the PDFs must be downloaded after the app is downloaded. This makes the overall size of the app smaller, but someone one the go might be unpleasantly surprised by that fact. Overall, a good app for maps in paris.
Shi X. about
Paris City Maps - Discover PAR with Metro & Bus, v3.0.0