We've been hard at work implementing many of our most common feature requests, and we have lots to announce this week! We're starting it off by announcing our own billing system, outside of in-app purchases. Simply log in at https://billing.firehosechat.com/login to add your credit card and go through the upgrading process.
We found that only allowing upgrades through in-app purchases was a dealbreaker for many companies who needed to use business credit cards that aren't attached to an iTunes account. We're happy to be able to accommodate all customers now! All credit cards and subscriptions are managed by Stripe.
This is one of many improvements we have in store to make Firehose Chat more friendly to your business. Stay tuned!