Yes this app is good for buying cryptocurrencies but I think this only useful for those who are in you're country. I'm from Pakistan there is only one website currently provide that service to buy bitcoin its name is localbitcoin and I think its price is not too much I'm using this for withdrawing my Steemit earning in Bitcoin so form my opinion this is limited and localbitcoin provide it's services to almost countries hope you like my comment and I'm minnow need some delegation to grow up keep supporting newbies :D
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