I had multiple apps to test which is best for me and Obviously that doesn't mean everyone but when using there wallet to get some crypto over from another wallet coinbase took 30% of my bitcoin for simply transferring Into there wallet to use in there APP Which is super steep fee's in comparison to other apps that didn't charge anything or 0.3% super low fee's this is unexceptionable and now I wish to take my bit coin out it wants another 30% so I've lost over half my coins with no purchase...