EXPTOOL99 is a Chrome extension designed to enhance the management of experiment variation IDs. This tool enables users to easily overwrite existing variation IDs with alternative IDs, simplifying the process of conducting experiments and adjustments in various applications. The extension is particularly useful for developers and researchers who require flexibility in their experimental setups.

The program is free to use and falls under the category of add-ons and tools for browsers. Its straightforward functionality allows for efficient manipulation of variation IDs, making it a valuable asset for anyone involved in experimentation or A/B testing. With EXPTOOL99, users can focus more on their research and less on the technicalities of managing variation IDs.