AlexanderRuf asked us via email as well -- I think it's worth me reposting my response here just in case anyone else is wondering!
Here's what the different accounts offer:
- "Junior" and "Premium" accounts: one web application, hosted at http://yourusername.pythonanywhere.com/
- "Hosting" accounts: currently, one web application, hosted at http://yourusername.pythonanywhere.com/ and also at your own domain. This will soon change so that you can have two different applications.
- "Pro" accounts: when these are done, you can have up to eleven different web applications: one at http://yourusername.pythonanywhere.com/, and one on each of up to ten domains.
Our prices do not include the cost of buying the domains, you buy them elsewhere and then set up CNAMEs so that they point to to yourusername.pythonanywhere.com, then our servers handle separating everything out so that the right requests go to the right one of your web applications.