Liber Pro 3.6.3 - App Store

---

About Liber Pro

Liber Pro takes the 1961 Liber Usualis, a book of over 2,300 pages of Gregorian Chant for use throughout the liturgical year, and literally puts it at your fingertips on your iPhone, iPad, or iPod Touch. Liber Pro adds to...

Liber Pro takes the 1961 Liber Usualis, a book of over 2,300 pages of Gregorian Chant for use throughout the liturgical year, and literally puts it at your fingertips on your iPhone, iPad, or iPod Touch. Liber Pro adds to this tome a linked table of contents, user-defined bookmarks, vertical and horizontal paging and zooming, browser-like navigation, a dynamic liturgical calendar, and more. Liber Pro is more than just an eBook. It is also a complete 1961 Roman Calendar, capable of calculating the moveable feasts throughout the year automatically. This means you can select a date; view the proper, common, and feria for that date; and jump instantly to the relevant pages in the Liber Usualis. FEATURES: Browser: - 1961 Liber Usualis: over 2,300 pages - Scroll, zoom, and page with touch gestures - Simple “Back” and “Forward” buttons traverse browsing history - Browse in portrait or landscape orientation - Option to hide view selector for additional viewing area - Selectable paging direction: up and down or left and right - Selectable overlay eases page viewing - Two-finger tap brings up markup palette (In-App Purchase Required) Calendar: - Calculates the day’s feast from the calendar of 1961 - Links to the starting page of the proper, common, and feria of the day - Select today, the next or previous day, the next or previous week, or choose a day with a date picker Bookmarks: - User-defined bookmarks retain page, position, and zoom - List of bookmarks can be reordered and individual bookmarks deleted Table of Contents: - Extensive table of contents provides links to Masses, offices, rubrics, and much more History: - Provides links to the 100 most recently visited pages this session Search: - Text-based search of the Liber - Tap a search result to jump to the page Annotations: - iPhone/iPod - Three drawing tools plus selection tool - Freeform or four-point-fill drawing modes - Four colors available plus ability to white page text out - iPad - Includes all annotation features available for iPhone/iPod - Additional highlighter tool - Four point line-to mode - Twelve color palette

Version History Minor code updates. 3.6.3 02/04/2025 - Improved the code to allow hiding the navigation bar on newer iOS versions. This is an option you may choose under settings. - Gave a general facelift and some new paint. - Added a Walkthrough to get you familiar with all the features of Liber Pro! - Updated deprecated parts of the code, squashed a few bugs, made it compatible with the latest iOS versions. 3.6.2 09/20/2023 - Removed the in-app purchases making the annotations and search feature free from here out. - Removed availability for Mainland China due to local restrictions and requirements. - Some code clean up and updating. - Changed the App Version numbering to reflect the iMass numbering system. First number reflects major upgrades, second number is for minor code fixes and third number is for amount of times submitted before being accepted by the App Store. ~ Special thanks to Drake Publications for entrusting Liber Pro's upkeep and future development to the LiveMass.net team. We are humbled to be entrusted the care of this monumental work. 3.5.3 09/15/2023 Stability improvements and updates for iOS 14. 3.3 04/03/2021 - Bug fix for in-app purchase restoration on iPad 3.2 10/27/2020 - Support for Dark Mode - Option to invert chant colors in Dark Mode - Improved placement of chant on iPad and tall devices - App settings now accessible in the app itself 3.1 09/18/2020 - Update for iOS 13 - Annotations (In-App Purchase Required) - Search (In-App Purchase Required) 3.0 06/25/2020 - Update for iOS 11 - Calendar fix for the Vigil of Christmas falling on Sunday - Fixed zooming issues from previous version - Support for split screen on compatible devices - User-selectable control over the following paging behaviors: - Center page after swipe (on by default but can now be turned off via Settings app) - Bounce off edges when scrolling (on by default but can now be turned off via Settings app) - Page margin 2.1 12/12/2017 Updated for iOS 8. Added alternate feast to calendar view. Added page border option. Renders native PDF on all devices. Fixed a few minor calendar inaccuracies. NOTE: On some devices, zooming can be slow. 2.0 09/11/2015 Restored multitasking awareness. 1.2.1 11/21/2011 iOS 5 Compatibility 1.2 11/10/2011 - Fixed bug where Liber Pro would hang when trying to determine the date of the 23rd Sunday after Pentecost in 2011. - Added support for iPad. - iPad will render pages as PDF. 1.1 01/05/2011 1.0 09/18/2009

---

Previous Versions

Here you can find the changelog of Liber Pro since it was posted on our website on 2016-10-03 21:32:10. The latest version is 3.6.3 and it was updated on 2026-07-01 03:22:42. See below the changes in each version.

---

Related Apps

Here you can find apps that are similar with Liber Pro.

---

Disclaimer