For Study Bible Online (on the computer) you always need the Internet. You can use the Study Bible app offline. However, it is required that when you use the Study Bible app for the first time , an internet connection is available. This is necessary for the one-time build-up of the offline database the app uses.  After this, you can use the Study Bible app without an Internet connection. You can download the Study Bible app from the AppStore or in the PlayStore.