My grade before starting litlearn was a weak 3, My final grade was a strong 5. I basically relied on litlearn to get me through the entire IB course, learning everything from it. English was my least favourite subject and you made it tolerable, and even interesting/somewhat enjoyable here and there. It was cool to learn all the techniques and methods in a well-structured approach that simplified the learning progress (without lacking on the high level of content). I didn't have time to get through it all and even with that it boosted my grade far beyond what I could've imagined. I definitely recommend it.