As the name suggests, just SHAKE to call through GSM/CDMA or Skype or Viber or SMS/text message a contact through GSM/CDMA or WhatsApp! All you need to do is select a contact for calling and texting, switch the function on, set sensitivity as needed and voila! You're done!
Get the free .apk setup package of Shake to Call/Message FREE 3.1.0 and read users' reviews on Droid Informer. This installer takes up 858 KB of disk space and it can be launched on Android devices 2.0 and higher. The antivirus report has confirmed that the app is completely safe for usage. InApps is the official developer of this application which can be found in the Communication category.