The choice of Mac optimization software depends on your personal needs. If you are looking for an app that’s able to take out the trash that your apps pile up and is also protective of your privacy in some way but that can also be used as an all-in-one Mac maintenance app, then Dr. Cleaner Pro is probably the tool to address your needs.
Those looking for advanced features such as access to hidden options in the system or who don’t mind if the app doesn’t display the amount of storage that they will regain by taking out the trash will likely find OnyX that is the best option. In the end, it’s down to you, but by checking out our full reviews of both apps you’ll find more in-depth details to help make that decision.