Look at Steam's Discovery Queue. Make a better version of that and have it work on mobile. Throw in the features of CheapShark (multiple store price comparison

Look at Steam's Discovery Queue. Make a better version of that and have it work on mobile. Throw in the features of CheapShark (multiple store price comparison and email alerts are the big ones). Import my Steam profile data and use that to help seed. Have it pull from more then one store front but nothing unheard of, stick to sites like Steam, Humble, Gog, itch.io, etc. Don't use G2A.