Hi valve, sorry if u mentioned it, but I'm wondering which...

Hi valve, sorry if u mentioned it, but I'm wondering which app/software you use to trade cryptos? I've downloaded and few to test and they don't seem right- excessive fees, hard to withdraw, varying prices and large spreads. I wanted to hear from a real user whose tested it all the through to recommend a suitable one. I'm going to have a dabble. Cheers