Fishdom 4 free download full version for pc

I really love the graphics of this game & the cute messages! I have even shared it with my young toddler grandson, who loves to see the active fish! However, I find this game overly frustrating for the following reasons: the game claims to be free, but as you advance in the levels within the game & timed stages are introduced there is no way to win until you buy more time or diamonds to get the tools you need to advance out of a particular frame. I noticed that you buy what seems like a lot of diamonds, but then you have to use so many to extend time or gwt tools. One day, I noticed I had made three small charges to buy diamonds, but realized it added up to $25 for a few hours of fun?? Then, I decided I would not keep buying diamonds & instead forfeit a life, but then you are only allowed to do this a few times & then you get timed out! Each time, the timed out period becomes larger! So what I thought would be a fun game has instead become increasingly frustrating!! I will probably wind up giving up this game. A free game, shouls not become so costly!!!