I tried to actually modeled on the industry stopwatch that use the handy development in smartphone app in the video site for development. And if turn off the key operation sound of the smartphone and can be operated in a completely silent. It is mimic the industry stopwatch. This is donation version. Free version and functionality is exactly the same.
This application is totally secure for downloading. ZEBRASOFT Tamayan is the creator of the app which can be found in the Tools category. The latest release was on Oct 11, 2015 and zTimeKeeper donation was downloaded and installed by over 10 users.