Slowly but steadily, I'm building not a rocket or AI science but a boring (and reliable) IP Geolocation Service: https://ip-sonar.com
It has a rich free tier, simple API, and a client dashboard that is easy to use. I do my best to build a service that I would love to use as a software engineer.
Because I love building APIs and backend services, I built a simple IP geolocation service with the best developer experience. It has free (rate-limited) access and affordable paid tiers. Check it out: https://ip-sonar.com
Unlimited free seems great!
I'm also building an IP Geolocation service with a generously free tier. I focus on DX and simplicity: https://ip-sonar.com - still in build phase, but the API is working.