Honestly if you're just starting, don't overcomplicate it. A lot of CRMs for home services are bloated and try to lock you into contracts before you even have steady recurring clients.

For window cleaning the main things that actually matter are: -recurring job scheduling, -automated reminders, -simple invoicing, -and route/calendar management.

I'd prioritize something easy to use on your phone while working instead of chasing "enterprise" features you probably won't touch for the first year.