Its rather slim pickings when it comes to dApps that arent steem based lol. I tried out Storm Play for a bit and earned some STO playing mobile games and completing microtasks but it got boring pretty quickly

I've also used DENT to buy and sell mobile data since South African mobile data prices are ridiculous and its easier when you're travelling to buy various data plans from other countries

I also give BitTube and Presearch a try but they are both clunky and don't seem like they are going to catch on