Developer Marco Arment pulled his iOS 9 content blocker from the App Store two days after launching it. He says it “just doesn’t feel good” to be profiting from his app Peace while taking money away from advertisers and publishers. He’s even offering refunds to anyone who already bought Peace expecting updates and support down the line, which they now won’t be getting.

Apple is planning to open up mobile Safari to “Content Blockers,” according to a new features discovered in the iOS 9 beta. The change could pave the way for ad blocking extensions, which prevent images, popups, and other content from loading as you browse the web.