Today I downloaded the Calimoto app, and would strongly recommend it. it's a GPS app that will plot your course on twisty roads to your destination. You can record your ride to repeat or share, and can try rides from other users. The round trip feature lets you pick a distance, then will come up with a random round trip route back to your location, and on twisty roads. I will often only get to ride for 2 hours or so, and I think this will make for more entertaining rides when on a schedule.
calimoto
I'm not compensated for this review in any way, just wanted to share something I really liked!
Mods, please move if this is in the wrong sub, thanks!