Never heard of this company or website - so glad to see this name here. (And just a benefit of doubt with 5-stars!)
This is from their site as I will perhaps post some more reviews about this product/service/app.
AppFolio Property Manager is designed for property managers who want to automate, modernize, and grow their business. Whether you manage multifamily, single-family, student housing, HOA, condo, or commercial properties—or maybe you manage a mixed portfolio—our all-in-one cloud-based solution has features built specifically for you so you can streamline your workday and focus on your bottom line..