Pros
Young and energetic company filled with talented, smart people. Long term growth prospects of the company are great, and the stock has been a great investment since the early days and looks poised to continue to be so. I invested as an employee and many other employees and customers have invested $$ in addition to being granted stock by the company.
The company is an industry leader and the software is typically a major upgrade for newly on-boarded customers. It is a nice feeling to hear customers express gratitude consistently. Check out the facebook page for "multifamily share space" and search Knock, you will see how highly it is regarded.
Cons
Moves fast and can be tough to keep up with due to incredibly fast growth but that is typical of startups. The company grew from 0 to over 1 million apartment units and $10,000,000 in revenue on the platform since 2015.. crazy fast growth brings a certain intensity that may be overwhelming for some and exhilarating for others.