Personally paid for Niagara launcher as I find that to be the far superior launcher to any other I've tried. My second one is Symfonium, the most feature rich and well developed audio player.
Torque Pro. Extra gauges for your car, like oil temp, timing, fuel trim, air-to-fuel ratio, tire pressures, MPG, and so much more. Also you can use it to see if you'll pass emissions before you even go in for testing. (Requires OBD-II Bluetooth dongle.)
Also if you're willing to answer a couple of surveys a month, you can get paid apps for free forever using the Google Opinion Rewards app.
Unless Google Googles you. I used to use this, but I have apparently been permanently silently banned from it with no explanation and no recourse. I did nothing wrong or disingenuous as far as I can tell; It simply kept asking me -- presumably based on my location -- how my experience was with retailer X, Y, or Z was. Always stores which I had not visited but simply gone near, and I truthfully answered that I did not go to those places and it'd give me thirty cents or whatever, but then one day it just stopped offering me surveys at all, apparently forever.
So I guess this flags the magic Google algorithm that I am worthless as a consumer and the app no just longer does anything on any of my devices anymore. It loads, it displays, but it never presents me any surveys. It squatted there on my phone completely silent for six months, so I uninstalled it. What a crock.
Also, I'm sure they're spying on you all the time through that app. Obviously it tracks your location, and Satan himself only knows what else it reports back to them. I think I'd give it a miss at this point. I'd rather pay $2 of real money for some app versus having Google snooping around behind me all the time just to get something for "free."
But yeah, Torque Pro is worth it. I use it all the time. So is Alpine Quest. Those are the only two paid apps I ever use on my phone.
First time I heard of Google Opinion Rewards. Skimmed through the Terms of Service, and they indeed tell you that they use your location and gather information tied to your Google account.
But hey, at least this time they are paying for selling your privacy!