Telegram founder Pavel Durov periodically criticizes Apple for the limitations of its platform. Last year, he called the company’s smartphones “medieval” and iPhone users “digital slaves.”

“Owning an iPhone makes you a digital slave to Apple – you’re only allowed to use apps that Apple allows you to install through their App Store, and you can only use Apple’s iCloud to back up your data,” wrote Durov then.

This time, the App Store came under his criticism again, or rather the process of checking programs and updates before they get to users’ smartphones. According to Durov, the Telegram update has been in the verification process for two weeks.

“Our upcoming update, which is supposed to revolutionize the way people express themselves in messaging, has been stuck in Apple’s ‘review’ for two weeks without explanation or any feedback from Apple.

If Telegram, one of the top 10 most popular apps in the world, receives this treatment, one can only imagine the difficulties smaller app developers face. It’s not just demoralizing: it’s causing direct financial damage to hundreds of thousands of mobile apps worldwide.

That damage is on top of the 30% tax that Apple and Google charge app developers which they say is supposed to pay for the resources needed to review apps. Regulatory bodies in the EU and other countries are gradually starting to look into these abuses. But the economic losses that Apple has already caused to the technology industry will not be canceled,” Durov complains about Apple’s policy.

It is unlikely that such public statements, like Durov’s past attacks on Apple, will receive a response from the company. Apple has come under fire from developers in the past for its lengthy approval process, but the company can always explain this as the need for thorough check to ensure the safety of user data.