Drill bits

Been looking for a gizmo I can use to sharpen or repair broken drill bits. I’ve seen drill doctor, but I am confused if that is what I want.

Anyone have any experience or anything they recommend

https://www.amazon.com/Drill-Doctor-High-Speed-TiN-coated-Adjustable/dp/B000BKTA00/ref=sr_1_2?s=power-hand-tools&ie=UTF8&qid=1528472702&sr=1-2&keywords=drill+doctor