TinkerTool is an application that gives you access to additional preference settings that Apple has built into Mac OS X. This means that you can activate hidden features in the operating system and in some of the applications delivered with the system.
The tool makes sure that preference changes only affect the current user. No administrative privileges are needed in order to use the tool. TinkerTool can be used in professional networks where users have restricted permissions. The program will never change any component of the operating system, so the integrity of your system is not at risk, and there will be no negative effect on system updates.
All the preference settings that are changed by TinkerTool can be reset to Apple’s default settings or to the previous state. No dangerous background processes are used for TinkerTool’s operations.
Because TinkerTool only gives you access to features already built into Mac OS X, its feature set varies greatly between different operating system versions.