Palm OS API Version Check (CheckPRC) is a useful tool for Palm developers to key compatibility problems and maximise the count of users who stern access their applications. It stern be used to fix the earliest interpretation of Palm OS that a Palm application may run on, and to key all the Palm OS functions that the application uses. CheckPRC runs on 32-bit Microsoft Windows systems and analyses PalmOS executable .prc files. Each API officiate used by the application is listed with the count of occurrences found, and identified by the PalmOS interpretation count in which it showtime appeared. The functions are listed in reversal interpretation count order so it is promiscuous to interpret the lowest interpretation of PalmOS which is required to defend the application. If the functions which depend on the higher versions of PalmOS are limited in count, the developer of the application may be able to redesign the software to eradicate them. This is belike to ready the application accessible to a larger count of users.