Knowledge is power. Withholding knowledge is turn-over. This holds true for pharmaceutical companies among others. A study conducted by the Institute for Quality and Efficiency in Health Care (IQWiG) on pharmaceutical studies showed that most studies never get published.
Free Apps come to your phone at great personal cost to yourself. Most free apps suck information from your mobile phone, tablet, or laptop without your permission or knowledge. And this includes information you really would prefer to stay with you.