The Jehovah's Witnesses have three official mobile applications that are free of charge: JW Library, JW Language and JW Library Sign Language. In addition, there are several free third-party applications that cater to Jehovah's Witnesses, including MyTime, Field Service Assistant and JW Tools Free.
JW Library includes multiple Bible translations in English and the "New World Translation" in many foreign languages. The application allows the user to see a specific Bible verse across several translations at the same time. The application also provides easy navigation between Bible footnotes and references. JW Library also provides access to Jehovah's Witness books and brochures, as well as the ability to highlight text and place bookmarks.
The purpose of JW Language is to help Jehovah's Witnesses to use a foreign language in preaching work. One method the application provides is side-by-side comparison of a Jehovah's Witness tract in the user's native and target languages. The application also has audio recordings and flash cards. Some of the languages supported by the application are Chinese, French, German, Italian and Portuguese. The application also has support for users who want to learn Bengali, Indonesian, Swahili, Tagalog and Turkish.
Many third-party applications for Jehovah's Witnesses are designed as field ministry organizers. For example, MyTime helps the Witness to take notes of all the interested people encountered in the preaching work as well as a map tool. JW Tools Free has a basic organizer, as well as the ability to download Jehovah's Witness publications.