Useless because of pop up ads and constant nags.

How do you know if its good? It looks like it could be phenomenal but the ads, pop ups you have to watch, and the rate it 5 stars that are so insanely frequent (every few seconds) make it impossible to read the information. Really too bad. Looks like it could be very useful.

Chance600 about Tactics Guide for Clash Royale - Tips, Strategies, Videos