Graph 89 Free is an emulator for the TI-89 graphing calculator available on the Android platform. It allows users to emulate the calculator on their mobile devices without the need for the physical device. However, it is important to note that the ROM image is not included in the application and users need to extract it from their own calculator before downloading the emulator.

The application is perfect for students and professionals who require a graphing calculator but don't want to carry a physical device with them. It is easy to use and provides all the features of the TI-89 calculator, including graphing, calculus, matrix operations, and more. The emulator also supports a wide range of programs and games that were originally designed for the TI-89 calculator.