OffPAC UPSI Legacy is an Android app developed by Perpustakaan Tuanku Bainun. It falls under the category of Education & Reference, specifically in the Books subcategory. With OffPAC, users can access the Tuanku Bainun Library's public access catalogue directly from their Android smartphones.

One of the standout features of OffPAC is its offline capability. Unlike traditional OPAC systems, OffPAC does not require an active internet connection for searching books and materials. The app's database is automatically updated when the user connects to the Google Play Store app update mechanism.

Users can not only search for books but also view the item status and make reservations, albeit with an internet connection. The app also allows users to navigate to specific shelves, saving them time in locating materials. Additionally, users can bookmark searched items for later access, with unlimited bookmarking available.

OffPAC is optimized for Android devices with at least 1GB of RAM and 200MB of free space on internal storage. The app itself is only 32MB in size, but the additional 200MB ensures smooth performance by providing enough cache. OffPAC is compatible with Android 4.0 and above.

Please note that as of 13 March 2020, this version of OffPAC will no longer receive updates. A new version is scheduled for release in 2021 as part of an internal library system upgrade.

Disclaimer: OffPAC UPSI Legacy is developed by Tuanku Bainun Library and its codes and binary are copyrighted by the library.