macOS apps which I share at https://lowtechguys.com/ https://lowtechguys.com/ bring me $7k/month on average at the moment, and it keeps growing. It started in

macOS apps which I share at https://lowtechguys.com/ https://lowtechguys.com/ bring me $7k/month on average at the moment, and it keeps growing. It started in 2017 when I shared the first free and open source version of Lunar (https://lunar.fyi/ https://lunar.fyi/), an app for controlling monitors. At that time, there was only a command line for doing this stuff (https://github.com/kfix/ddcctl https://github.com/kfix/ddcctl) and I wanted a more visual way of changing the brightness. So I learned Swift, learned how to bridge the ddcctl C code and call it from Swift, then made a rough interface and published it: https://www.producthunt.com/products/lunar#lunar-5 https://www.producthunt.com/products/lunar#lunar-5 It turned out people did have a need for this and asked if they could donate. I set up a Buy me a Coffee page and in 4 years collected about $5k in donations. That's a lot of money for a Romanian. When Apple Silicon appeared, Lunar didn't work anymore because the whole hardware arrangement and drivers were different, and there was no documentation on how to send I²C data. I took the plunge and quit my stressful job, bought an M1 MacBook and reverse engineered the I²C communication: https://alinpanaitiu.com/blog/journey-to-ddc-on-m1-macs/ https://alinpanaitiu.com/blog/journey-to-ddc-on-m1-macs/ Then published Lunar 4 as a Free version with a Pro paid upgrade. I was reluctant with this, didn't think anyone would buy it, but to this day I'm able to be unemployed and put my ideas into practice because of it.