Click the green Code button on GitHub and choose Download ZIP. Double-click the zip to unpack it, then move the folder somewhere convenient like Documents or Desktop.
You only need to do this once.
- Open Terminal (⌘-Space, type
terminal, hit Enter). - Type
bash— with a trailing space — but don't hit Enter yet. - Drag
install.shfrom the LiftLens folder into the Terminal window. - Hit Enter.
Wait for it to finish. You're done when it prints All set!.
Double-click LiftLens.command inside the folder.
The first time you open it, macOS might complain that it's from an unidentified developer. Right-click the file, pick Open, then Open again in the dialog that pops up. After that it'll launch normally.