“We found that about 20% of the users who are starting a trial or completing a purchase on the web are also opting in to purchase this PDF upsell. Right now it's just a Google Drive folder that we send people a link to and they're able to download the PDFs directly.”

20% of users buy a $9.99 printable upsell immediately after starting a trial — one-time IAP adds revenue without subscription churn

Reading.com offers a $9.99 one-time purchase giving immediate access to the full curriculum's printable worksheets — content that is also available progressively inside the subscription. The offer appears immediately post-trial-start or post-purchase, and 1 in 5 users buys it. The materials create offline brand presence in the home, reinforce parent commitment to the curriculum, and generate incremental revenue from users who would have stayed subscribers regardless.