App developers switching to a new subscription-based business model is nothing new, and many of them have had to do it in an attempt to stabilize their repeat income. But making the move can often anger customers who prefer to pay for their software upfront. And things can get even more iffy if a developer makes a bad decision about the way it intends to roll the new subscription out.
That appears to have been the case with a hugely popular text-to-speech app called Voice Dream Reader. The Mac and iOS app is switching to a subscription model which was already enough to get people upset. But then the developer also chose to effectively block people from using the old version of the app that they already paid for.
