Percentful

Hello hunters! Online percentage calculators are very popular tools. I noticed that the space is dominated by tools with millions of monthly pageviews, generating revenue via ads. However, the existing tools seem not to have updated their technology stack in the last 3 decades or they hinder the user journey with too many ads and little form validation. So, as a programmer, I saw an opportunity to perform all the tasks of a complete project (no matter how small): design, dev, test, deploy, and promotion (posting on PH ;) I hope to use the traffic to, in a few months, sell programming courses, using Percentful's source code as an example of a real web app. Try it. Comment. And share to encourage other makers to do the same. More tools on the way. Many thanks to everyone!