Isotopes Decay Calculator is a radioactive half-life decay calculator base on exponential decay equation by Ernest Rutherford. There are over 160 radionuclide isotopes. Isotopes Decay Calculator facilitate simple to use GUI and performs units conversion between tera-becquerel, giga-becquerel,mega-becquerel, kilo-becquerel, becquerel, kilo-curie,curie, milli-curie, micro-curie,nano-curie, pico-curie,Rutherford, dpm and dps. A quick instructions is included in About menu.To access quick instruction tab on device menu and select About.Allow to send results via SMS, and Email with Text and HTML table formats.The Isotopes Decay Calculator App is provided as is, without any guarantees or warranty. Although the author has attempted to find and correct any bugs or error in the software programs, the author is not liable for any damage or losses of any kind caused by the use or misuse of the programs.