And if Apple's slowing down, developers have little recourse: If you want to sell your apps in the Mac App Store, you play by Apple's rules. That's why developers when Apple says they must--there are no other options. And that's why many developers, along with some of their customers, are .

Sources suggested to that when Mac App Store approval times first started slowing down, the blame fell squarely on iOS 6 and the iPhone 5. Developers rushed to submit apps that took advantage of the new operating system and the new iPhone's taller screen, and Apple chose to reallocate resources from the Mac App Store approval queue to the iOS queue instead.

In theory, though, the iOS approval rush should be over by now. While some developers are still updating their apps with iOS 6 and iPhone 5 compatibility, the days of endless update badges appearing on the App Store seem to be behind us for now. But for some Mac App Store developers, approval times haven't yet shown signs of improvement.

The website collects reports from developers who tweet about how long their apps spend in Apple's approval queues. Based on nearly 70 reports, the site puts the average review time at 27 days for the past month, and the trend line shows that reviews are slowing down, not speeding up. (The same site reports the average iOS App Store review time at seven days.)