simple pricing question

simple pricing question

I've built a little scheduling app (2 forms) using Creator that lets people add/edit/delete events on a calendar. This is for internal use at my company of 20 people. For various reasons, this has specialized functionality beyond that of Google Calendars or other pre-built systems. If I am to understand the ZOHO Creator pricing correctly, I have 2 options:
  1. Subscribe to the Professional Plus level for $100/month (to cover my 20 users).
  2. Make my app public and let Google and the world see it.
That seems nuts. Am I missing something?