My personal preference would be a single number for the interest rate, with everything calculated in, accounted daily (difficult to implement, easy to understan

My personal preference would be a single number for the interest rate, with everything calculated in, accounted daily (difficult to implement, easy to understand and fair to the customer). Many of the new cool SaaS businesses try to do that. Most banks, mobile phone shops etc. don't. Edited as I'm seeing that you're kinda defending your company from some strongly worded allegations. I just commented on the general state of the world, and didn't mean to attack you or your service.