Tinder has a "double slider" feature on their app when you select an age range. It's rather nifty. I thought perhaps there would be a hack for such a thing where you could overlay two UISliders on top of each other to create this, but this doesn't work (the one in front covers up one in back, preventing touches..., and not to mention covering it) Also the line of the UISlider covers up the second UISlider; it's quite a headache. How would you guys do it? Write it from scratch?
For a picture of this functionality see: https://www.google.com/search?q=tinder+age+range&espv=2&biw=960&bih=498&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiUw7nl1v_MAhVgVWMKHbyRDyIQ_AUIBygC#imgrc=hwVRxHkN5NxKEM%3A'
Edit: I think this Github link may be the way to go: https://github.com/muZZkat/NMRangeSlider