What you see on screen is not always what comes off the press, and two printers can output the same file differently. Calibration narrows that gap and makes results predictable.
Use the right colour profile for the printer and paper so output lands closer to what you expect.
Tune CMYK channels to reach the target result, especially across different paper stocks.
Configure each device once so work looks consistent wherever it is printed.
Screens display in RGB while printing uses CMYK, and every printer and paper has its own colour response. Calibration reduces that gap.
You can start with the ICC profiles for your printer and paper plus CMYK adjustment in the app; measuring hardware gives more accuracy but is not required to begin.
Download the trial and calibrate on your own printer.