To find RealPlayer version:
1. Open the application and click the application logo in the upper left.
2. Click Help, then About RealPlayer or About RealTimes.
3. In the About window, look at the second line from the top. In this example, it is Version 18 (RealTimes):
To download previous version RealPlayer Cloud or RealPlayer 16, follow this article: https://customer.real.com/hc/en-us/articles/204040003
I hope this information helps!