10/20/2026
What you need to know:
Android Users: Starting Oct. 20, the new version arrives as an update to the app they already have.
If auto-updates are on in the Google Play Store, it will install on its own. If not, open the Play Store, search “WLS Mobile,” and tap Update.
Log in with your library card number and PIN.
iPhone & iPad Users: Starting Oct. 20 (today) you will need to download a new app called Solus Library App from the App Store.
After downloading, search for the Westchester Library System, and log in with your library card number and PIN.
What carries over?
Library card number, linked accounts, holds, and checkouts will all move over automatically.
You can make new lists in the app, but pre-existing lists & history won’t carry over. Don’t worry! They’re still in the catalog! You can view and edit those anytime by logging in to their library catalog in your phone (or iPad or computer) web browser at opac.westchesterlibraries.org