Two notable subscriptions that offer large print magazines are Reader's Digest and Guideposts. Additional large-print options can be found via Magazines.com, Amazon.com and Magazine Line.
Magazines.com offers several crossword, circle-a-word and fill-in puzzle books that are in large print. Additionally, Upper Room Daily Devotional Guide (though not necessarily classed as a popular magazine) comes in a large print format. Amazon.com also offers Daily Word and Living Through Christ. Although it does not offer many large print magazines, a search of Speedy Mags pulls up an additional magazine titled Portals of Prayer. All prices on these websites vary competitively.