This is a basic simulator for summons in Final Fantasy Brave Exvius. The way it works is you choose a banner, then you put in the number of each type of summon you want to do, hit "Summon" and see how good or bad your results might be. It's just like summoning in the game, except without the regrets!
Summoning options will appear here when you choose a banner.
Results will appear here when you simulate a set of summons.