Cornerstone
Read the Bible. Learn the Faith.
A free Catholic Bible and faith companion — with the full 73-book canon, the Baltimore Catechism, daily quizzes, and reading plans. No account needed. Works offline.
📱 Android now · 🍎 iOS coming soonFree · No spam · Android users install today; everyone else gets notified at launch
What's in the App
Full Catholic Bible
73 books including the Deuterocanonicals, in multiple trusted public-domain translations (Douay-Rheims, CPDV, WEB-CE, KJV).
Baltimore Catechism
Traditional Catholic teaching in structured, easy-to-follow lessons — great for formation or refreshing the basics.
Reading Plans
Day-by-day plans that guide you through Scripture. Tracks your progress automatically and picks up where you left off.
Daily Bible Quiz
A fresh question every day to test and build your Scripture knowledge. Streaks and ranks keep it motivating.
Private by Design
All reading, notes, and progress live only on your device. No login. No cloud sync. We never see what you read.
Fully Offline
The entire Bible and Catechism are bundled in the app. Read anywhere — no data connection required.
A Look Inside
Swipe to browse →
How It Works
On Android? Join the Test Group
Tap Join Android Test Group above and join the Google Group using the same account that's signed in on your phone. That's what grants you Play Store access — you can install right away.
Not on Android yet? Leave your email instead and I'll reach out when you can install.Install from the Play Store
Once you've joined the group, open the Play Store link and tap Install. That's it — Cornerstone is ready to use.
Open Cornerstone in the Play Store
Access can take a few minutes to activate after joining — if the link isn't working yet, wait a bit and try again.Use It for a Bit
Google requires beta testers to have the app installed for at least two weeks before a full public launch can be approved. Just open it, read a chapter, try a quiz — use it however feels natural.
Feedback is genuinely welcome, but there's no obligation.Supported Countries
The beta is currently open to Android users in these countries:
Not on Android?
Cornerstone is Android-only while it's in testing. Leave your email and I'll notify you the moment it's available for your device — nothing else, no spam.
Get Notified at LaunchReady to Help?
I'm an independent developer building this as a side project. Every tester makes a real difference — thank you!
Join Android Test Group
"…built on the foundation of the apostles and prophets,
Christ Jesus himself being the chief cornerstone."
— Ephesians 2:20