RangeFinder is a web app that helps singers find their vocal range within a few seconds. It makes use of the mic to record your voice. After capturing your lowest and highest notes, it calculates your vocal range. Most of the calculations are done using javascript. There is a small ASP .Net backend API to help with email collection and mailchimp integration. The front-end is hosted on Netlify and the back-end is hosted on DigitalOcean. Lots of testing was done to improve UX and UI design.