The game features more than 30 songs right off the bat and contain 30 additional songs as iAPs. Rayark is also known for continuously updating its games so expect a whole lot more in the future.
Speaking of which, the iOS version will have a new character named Cherry on March 15th that will cost £9.99 and add ten new songs with more added in the future. The update will also add new story elements and songs for free.
This DLC should already be included in the Android version.
To celebrate the game's release on Android, it's currently on sale for €1.29 until March 14th.