I noticed there is a limitation of monthly public users (the numbers of users who sign into my app) max at 10,000 users at business plan. If my app grow beyond this, is there unlimited in public users plan ? If yes, what is the pricing ?
If you have uses beyond what the business plan can provide, you may have to look into an Enterprise plan.
The pricing page has a switch at the top of the page to view Business and Enterprise plans.