Install the Steam client from the official website if you haven't already. Search for "Geometry Dash" in the Steam Store. Purchase the game (usually priced at $3.99).
No. The official version costs $3.99. Beware of YouTube videos or torrent sites claiming "Geometry Dash 2.2 Download Macbook Free." These are almost always malware, adware, or outdated beta builds. Geometry Dash 2.2 Download Macbook