Based on the Civica Spydus platform, the app will provide around-the-clock access to library services.
The ability to search and list items in languages such as Vietnamese and Chinese will be provided on launch, and a full Chinese-language online catalogue will be added later this year.
The smartphone app will cover the Cabramatta, Bonnyrigg, Fairfield, Wetherill Park and Smithfield branches when it is made available in early May.
The accompanying web version can also be used to view upcoming events, access accounts and contact librarians.
And yes, the app does work in English, and it will be available for Android and iOS.
"The library service plays a vital role in supporting the life-long learning aspirations of the Fairfield City community, where many different cultures are valued and respected," said library manager Paul Scully.
"This new app is part of the Council's Open Libraries program, our commitment to modernising all Fairfield libraries with improved access to technology and applications. We are delighted to work with Civica to help share this important community resource with the people of Fairfield."
More than half the municipality's population were born overseas, with 49% coming from non-English speaking countries.