Xmart Calculator is a smart, simple and muti-functional calculator based on text expression, where users can define personal functions and all calculations are traceable.

Main Features:
1.Calculate the whole expression input by user.
2. Show all the calculation history.
3. Multi-functional calculation.
4. Calculation history can be saved into a text file.
5. Step by step traceability.
6. Personal function definable.

The license of this software is Freeware, you can free download and free use this calculator software.