I have used 3 different temperature monitoring systems at the various facilities that I have worked. CIMScan, http://cimtechniques.com/ , TempTrak https://www.cooper-atkins.com/products/temptrak-1/ , and Primex https://www.primexinc.com/ . I would have to say that TempTrak, although the biggest company, was my least favorite to manage. No system is perfect and they all have their limitations just like any software. They are all better than manually taking temps and changing charts.