Being a Java programmer and having worked for the top MNC in the world and having been associated with some apps, I have come to understand that just limiting your knowledge to programming will never make your money. May be you might get lucky to some what extent in freelancing. But the true money where you will be paid even when you are not working is apps.
Eventually the Internet came along and the Trading Post no longer commanded the secondhand market like it once did (though it did successfully transition online). It quickly became clear that eBay was the winner when it came to secondhand commerce online. As a result my first experience making any money from the Internet was selling old games, toys and electronics on eBay.
Fiverr is one of the biggest providers in the gig economy on the web and you can sell a wide variety of services and products through this medium. Do the research and find out what you can offer. However, keep in mind that like any other money-making task, it takes time to succeed here. And stellar reviews will help you generate more and more income over time.
You have likely heard of subscription boxes such as Birchbox and Julep. While almost anyone can start a subscription box service, they can be incredibly labor-intensive and the profit margin usually isn’t so great for those operating on a small scale. Did you know you could start a subscription for your knowledge that’s almost pure profit? With sites like SubHub, you can offer a monthly membership offering anything from meal plans to workout plans to crocheting patterns and beyond. The sky is the limit. You do need to provide new content on a consistent schedule to keep your customers happy. But if there is something your friends are always looking to you for new ideas, you may have an easy little side business on your hands.