Step by step how to use isearch app.Download free isearch from Google play store.i-Search custom search Android app is a powerful tool or search engine help professionals, students, researchers, teachers, doctors to define their own search sources from all over the Internet resources and get the specific results as per the sources defined.  Also users can save the detailed results for reading them in offline mode even when Internet is not available. Download i-Search today from google play and enjoy it on your Android Smart Phone.