How to clean Mac hard drive using Cleaner-App:ġ. Use Cleaner-App to free up disk space on your Mac.Ĭleaner-App is a quick disk space cleaner, which combines multiple cleanup functions in one software app: Whether duplicate files are taking up precious disk space, your startup disk is full, or you want to see what’s taking up space on your Mac, Cleaner-App provides the best solution. Cleaner-App is a cleaning software tool that organizes and optimizes disk space usage, creating more free storage space on your Mac.