You could have downloaded APL Pressure 2.0.9.4 from our software library for free. The most popular version among the program users is 2.0. The program belongs to Education Tools. Commonly, this program's installer has the following filename: APL Pressure 2.exe. The actual developer of the free program is Australian Pressure Laboratory.
From the developer:
APL Pressure simplifies the use of the information in your NATA certificate allowing you to quickly and accurately determine the generated pressure and uncertainty from your dead weight tester. The program finds the optimal weight stack loading for a given target pressure and tolerance and reports the exact pressure and calculated uncertainty.
You may want to check out more software, such as Dyalog APL Unicode IME, SF Pressure Drop or Blood Pressure Browser, which might be similar to APL Pressure.