The Most Secure Excel Workbook Formula Protection

The XCell Compiler compiles formulas into binary format (into our proprietary byte code) and removes formulas from workbook cells because compiled EXE has our own calculation engine which calculates compiled formulas instead of Excel. This is the only way to keep your formulas really secure and avoid algorithm copying. All compiled formulas moved from xls file into EXE file because they are already not formulas after compilation but, instead, pure algorithms in byte code.

After calculation our engine reflects calculated values into Excel’s grid. That is why you see only numbers in cells where there were formulas before compilation.