I ve been building AI wrappers for the past 3 years as an indie hacker. None of them became profitable. Building failed products taught me how to code, design and market properly. And one day all those skills paid out 

The idea

2 months ago Skype announced it was closing down. Most people used Skype for video calls, but there was a niche of people who used Skype to make cheap international calls to mobile and landline numbers. That was a golden opportunity major playing leaving the market, and its users scrambling for an alternative.