Cubivio stats is a private tool used only by the owner of the Cubivio and Kubizy YouTube channels (@Cubivio, @CubivioRU, @CubivioES, @Kubizy, @KubizyRU, @KubizyES).
It reads the analytics of these channels through the official YouTube Analytics, YouTube Reporting and YouTube Data APIs with read-only access, and saves the numbers locally for the owner. It is not offered to other users.