I bought the app too early, they will not install me. Why must a calculator my IMEI (phone number), etc. have, nor are you? There are enough calculator apps that work without advertising and without data acquisitiveness. In addition, what does the company because improve the app yet, as I have read many, this 2 years! old app was probably no longer freshened long! Even more data gathering and maybe even advertising in a calculator app ... I break from Real. :-(