Very efficient just like the title states Be lazy all you want and never take the stairs again!
Needs regular updates I find this quite handy, but some of the station maps are out of date. For example Lawrence West needs the elevator added and Union needs a complete new map (I believe it is now complete).
Newbie to Toronto subway? I only take the subway two or three times a month, so I don't know exit locations off by heart. This app helps alot. No bells and whistles, because it just work.
Out of date Union, North York Centre way out of date. I'll continue to use my years-old paper version.
Does what it says nicely Small. Fast. Good job all around
The most useful offline app
Updates for Union, Pape and Dufferin