I finnaly got it – MonTowers ~Legend of Summoners~ Review

There is a way to get unlimited gatcha Summons for iOS here is how it works spend coins on gatcha then hold down the sleep button till you get to the power of screen then hold the home button down and Montowers will close then open it and you will have your coins back and your monster that you have summoned will still be there
Review by Good looked gamer on MonTowers ~Legend of Summoners~.