If you have iOS/Android development experience, you can look at the Developer sector, which is relatively niche IMO. I've developed the iOS/iPadOS app, Proxyman for iOS [0], which gains steadily ~2k recurring revenue every month. Basically, it's an iOS app that helps you to capture and decrypt HTTP/HTTPS traffic on your phone. The app is needed if you need to inspect traffic from your app. Because it's an iOS app, pu…
Even if its with a small team thats impressive, the UI is polished and full of features.