Twitter will be relaunching a revamped version of its subscription service tomorrow, with price increases for iPhone users.
Users can subscribe to the service in order to be able to edit their tweets, upload higher quality videos and get blue checkmarks.
It’s $8/month on the web, but $11/month on Apple iOS.
Twitter, which was acquired by Tesla owner Elon Musk earlier this year, has not provided an explanation as to why Apple users are being charged more.
However, there have been some media reports that the social media giant is looking to offset fees from the Apple app store.
The Twitter Blue service was originally launched in early November, but was shut down after a spike in fake accounts.
Musk took the Silicon Valley giant private in November for $44 billion, laying off thousands of employees worldwide.
He has previously voiced several complaints against Apple, most notably the 30% fee charged by the tech company for companies making in-app purchases.
The billionaire also confirmed on Twitter that the character limit for tweets will be increased from 280 to 4,000.