Lithium Pro

NOTE: This app acts as a Pro license to the free app. You must have Lithium installed in addition to this app and then the Pro features will activate in the free app. • Sync: Keep your data backed up and in sync across your devices using your Google Drive account. (Books themselves are not currently backed up or synced.) • Custom themes: Customize your page background color, text color and link colors. Create, delete and edit themes. You can access the custom themes feature by tapping the three-dots under Theme in display settings after upgrading. • More hightlight colors (see screenshots) • More features later.