A fully interactive application compatible with Android, iOS, Windows, and macOS. It contains all 70 lessons and audio in one digital package.

: This includes a digital version of the 648-page book along with the corresponding audio recordings. Enhanced eBook (ePub3)

Achieving advanced proficiency in English requires more than just basic grammar and a standard vocabulary. For those looking to bridge the gap between intermediate and advanced levels (B2 to C1), is often considered the gold standard of self-study methods.

Designed for daily study to reach C1 proficiency.