Alfred Beckman
Alfred Beckman reviewedFontRapidDesign and make fonts directly in Sketch
 RecommendedPros: 

- Easy to use and get started.

- Free

Cons: 

- Very basic functions

- Not all settings stored on save

I just used it quickly after finding it here on PH. Love it for inspiration, but would probably be a little limiting if you want to do something more serious.

Alfred Beckman has used this product for one day.