I successful cleared level 3..when moving further level it shows that level 4 is locked.How to unlock it..
Hi @Pradeepthedemon ! The lock on level 4 indicates that you have not purchased the full version of the game on Android, which is a $1.99 purchase.
I got that too. I bought the full version which was 1.99 and I really enjoyed it. I recommend you buy the full version as well.