Speaking to ICv2, the exec explained that the new terms and conditions Apple has imposed on in-app purchases led to the platform's postponement.
"We basically were about to launch when they announced their new policy," he said. "Of course that didn't make as much news regarding Dark Horse - on the effect it had on Dark Horse - but certainly one [of] the readers that was rejected got a lot of attention."
Richardson went on to say that the delay has only set the launch back by a matter of weeks. "We have a really aggressive programme. We want to put our stuff up but we want to make it available. We want to make it available at a really great price," he added.
"Some of the challenges that we have with Apple are that we'd like to charge the price we want to charge and we'd like to make sure we have last say in how our material is presented, but we're like everyone else. We need to be in the Apple store, so we'll do what we need to do.
"Dark Horse is into Apple in a big way - we use Macs and Apple technology for our whole company. We have iPods and iPads and iPhones and we're very much Apple reliant. It's not a big deal, it's just going to delay us a few weeks."
A new launch date for Dark Horse Digital is yet to be announced.