Facebook released a new massive  iOS app today for its users on Apple iPhone and iPad, saying it would speed up the performance of people accessing the world’s biggest social network on mobile.

The new mobile app is “a major update to the Facebook for iOS rebuilt from the ground up, to focus on one thing, performance,” said Facebook product manager Mick Johnson. Facebook for iOS has faced criticisms in the past few months for being slow and unresponsive.

Facebook also issued a smaller update to Facebook for Android , the Android app now supports faster photo uploads .