Those kinds of apps today tend to be part of a SaaS service and listed as Free in the App Store. Provided it’s B2B and not B2C - and you do signups and payments on your own website - then you’re exempt from the self-service signup (and 30% tax) requirements.
The catch is that as you get bigger and seem more B2C than B2B then Apple might start to take notice (see: Hey e-mail).
Well, I was thinking of things like media editing (or specialized text editing) and other apps, not all of which work well in a true SaaS model. On the other hand, it's significant that more and more of those have moved toward a subscription model...
The catch is that as you get bigger and seem more B2C than B2B then Apple might start to take notice (see: Hey e-mail).