CleanerOne 6.5 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software belongs to System Tools. This free software for Mac OS X was originally created by Trend Micro, Incorporated.
From the developer:
Removes temporary files including cache files. Clears mail cache. Removes user download folders. Deletes browser data, iTunes downloads and iOS temporary files. Empties the system trash can.
You may want to check out more software for Mac, such as QuicKeys, unpkg or Super Empty Trash, which might be similar to CleanerOne.