RobTop Games has a famously relaxed stance on modding, provided you do not harass other players. However, using comes with ethics:

Before attempting to beat a difficult level legitimately, use Noclip to memorize the layout and sync.

, which is the community-standard mod loader that works on top of your legitimate game install Safe Guide to Getting Noclip (Android) Install the Official Game : Ensure you have the official Geometry Dash 2.2 installed from the Google Play Store

First, you need to enable the installation of apps from unknown sources on your device. This option can usually be found in the Security settings.