The game throws premium currency at you like crazy, so f2p is in very good place in this game.

You literally get like 500$ worth of prem currency by end game for free and around 5-10$ worth of prem currency for average daily play. That's not even counting rankings which give you even more.

There is only 1 starter pack worth 'whaling' for if you plan to spend, which is 5k nutaku coins one for drones.

I am rank 1 in terms of power in the game by far(at least until others start catching up) and I spent 0$ just to tell how f2p it is.