I do use Binance apps, I must say that it is more useful and faster to use the app version rather than the website version. So far, it is more convenient to trade using the app. As of now, I am trading with Binance and Bitmex but bitmex doesn't have app right now. Look for the trusted exchanges before downloading it.
I use binance apps in mobile only when checking price of coins I have. But when I do trading I use laptop which more comfortable on me to trade coins. Actually, for us to ease of checking trusted exchange much better we search the most reputable apps when doing trading crypto, this could help.