Well the game's great!
After the first few levels it makes you watch a "loading" screen that plays ads if you dont have the full version, but the full version is worth it! Deemo is the only game that I would spend money on, even if the game takes tons of space, and if Deemo has its fair share of downfalls. Deemo does have many good things about it, Deemo is an offline game, Deemo has many songs, and even the genre of game is a big deal. There isn't a lot of rythem games with this Guitar Hero format that are offline. 
10/10!