User blog comment:Bloonstdfan360/Bloons Wiki News - July 20, 2013/@comment-1676226-20130721091932

Bloons TD Battles iOS will most probably cost after some time, I think.

Also don't get your hopes up too high, even though the left path is "winning", the right path can still come up on top. You'll take some time in the "second wave bloons". :)