If you download books from San Antonio Library System (a free app) the following answer is applicable.
You can download ebooks, audio books in any genre. There is still a 3-week loan period, but if the book does not have a waiting list, you can easily renew it. ~ Mary
Hi there Mary,
Thanks for contacting OverDrive Technical Support!
Good news! All ebooks in Libby can be made into large print!
To adjust the reading settings in Libby:
Open a book from Shelf > Loans.
Go to> Reading Settings.
Reading settings include:
Text scale: Use the slider to adjust the text size in the book. For a wider range of text sizes, toggle Include accessibility sizes on.
Lighting: Choose bright (black text on a white background), sepia (dark red text on a tan background), or dark (white text on a black background).
Book design: Choose a preset design you like, or select Custom to change the font, justification, line spacing, and text weight.
I hope this helps! Please let me know if there's anything else I can do for you.
Stay safe, Marissa OverDrive Technical Support