There is no more frustrating feeling to see a person needing help and you cannot help him or are afraid to help him. With Real Time CPR Guide this is not going to happen. As a CPR course instructor, lots of students told me that "in times of stress I would never be able to remember what to do, and I would probably prefer not to perform CPR".
Chen Gantz has designed Real Time CPR Guide that falls into the Medical tools category. The tool has been downloaded and set up by over 100K users and its latest update was released on Sep 10, 2014. According to the latest information, this application is rated 4.3 on Google Play.
Samsung and LG users download the app quite often. A free .apk file of Real Time CPR Guide 3.01 is available from Droid Informer and you can check out users' reviews on this site. Prepare 8 MB of free space on your device for this app setup package and keep in mind that it requires Android 2.2 and higher. The security report proves that the app is safe.