It seems you can't trade using the app from binance, and the app from coinbase only allows buying and selling from an account for limited crypto currencies.
Can anyone recommend a good safe and reliable altcoin trading app from a reputable brand (i.e. not by a random independent developer)?
yes this is an important question a lots of people had smartphones in their hand so that still don't know which is the perfect app for best trading including you so please share your thoughts about this thank you in advance.