I built something like that, a few times. Yes, it is very difficult to monetize something like this: - https://unli.xyz/city/calc/ https://unli.xyz/city/calc/

I built something like that, a few times. Yes, it is very difficult to monetize something like this: - https://unli.xyz/city/calc/ https://unli.xyz/city/calc/ - https://unli.xyz/city/window/ https://unli.xyz/city/window/ - https://travel.unli.xyz/ https://travel.unli.xyz/ (no longer loads data)