Open the Google app store and you'll see "Recommended for You". Since you've already downloaded those two other MS, IC, Gig type apps, you'll see similar apps. Download all the apps to see if they offer work in your area of South Florida. Or tell us which ones you've already tried that don't have work in your area so others who are currently looking for work in S.Florida can save some time and look elsewhere.
I've found companies by voraciously reading the discussion forums on this website. I believe your question about other apps was recently discussed. There's also a list somewhere on this website that lists the most popular or recently discussed companies. You'll need to sign up for all of them to see if there's work available in your area. If you've turned on notifications, the Presto app should notify you when new shops have been added to your home location. There's A LOT of competition and shops are quickly snapped up in many areas. Some shops pinned on the Presto app don't get picked up quickly or at all for good reason. Since I MS for $ (not a hobby or charity for MSC) I avoid the ones where the pay is not commensurate with the amount of work expected. I also avoid 90 day pay and MSC that have a reputation of shoppers having to chase after their hard earned payment. You know S. Florida has a lot of tourists, snowbirds, retirees, shoppers and other non MSC IC's. Since there are more shoppers than shops, I don't think they're tell you what companies they're working with. Nobody's giving up the ingredients in the Secret Sauce, ya gotta put in the work to find out. LOL.