TL;DR Literally required to spend thousands to have any presence online, which is 90% of the game.
I’m currently rank 97, but I could never recommend this game. The offline story itself is actually fun, which is why all of the bad about the real game is such a smack in the face. The offline story is pretty short, so the online gameplay is all this game truly has to offer. I don’t even have to get into any of what the online game has to offer to explain the absolute disease that this game is. It all boils down to the summon system. The chance for a SSR unit is astronomically small; Below 0.05% actually. To give an example of what this means, is that I have summoned 110 units, without a single SSR, and only 7 SR units. And on top of this, the price of in game currency is basically an actual scam. It’s 100 gems per summon, or 1000 for 10, so there’s not even a discount for multi summon. And for 4000 gems, it costs $80. And the tip of the iceberg, is that SSR units are insanely op. A level 100 SR unit, fully awakened, is no match for a base, level 60 SSR unit. The only way to be able to participate in the actual game, is to spend thousands of dollars to compete with the whales that play this game. This game really shouldn’t even be allowed on the Apple store, stay clear of it like the plague.