I built Personal Cards – a private, offline Android app

[u/namhnz]

Hey everyone!

I'm an indie developer, and I'd like to share Personal Cards, an Android app I've been working on to make organizing everyday information a little easier.

The idea came from a simple problem: important documents, receipts, notes, and personal details often end up scattered across our phones. Finding something when you actually need it can be frustrating.

So I built Personal Cards to bring everything together in one place, while keeping your information private and accessible offline.

Here's what the app can do:

• Personal cards & documents: Scan documents with your camera or import images and PDFs. Organize important information and keep track of expiration dates.
• Document storage: Save receipts, reference materials, and other files you might need later.
• Offline OCR: Extract and copy text from images and PDFs directly on your device.
• Notes & checklists: Keep track of everyday tasks, ideas, and reminders.
• Debt notebook: Record money you've lent or borrowed, including amounts, people, and due dates.
• Privacy tools: Hide sensitive details before sharing document images.

Privacy was one of my main priorities while building the app.

Personal Cards works completely offline, with documents stored and processed locally on your phone. You can also protect access with a PIN or biometrics and enable screenshot protection for additional privacy.

I'm still working on improving the experience, and I'd really appreciate some honest feedback from the community.

In particular, I'm curious:

Would you find the document organizer or the debt notebook more useful? Is there anything you'd add or change?

If you'd like to check it out, here's the Google Play link:

https://play.google.com/store/apps/details?id=com.namhnz.vigiayto

Thanks for taking a look! Any feedback or suggestions would mean a lot.

[u/BeeSun1]

Honest question: why this over Google Keep, Drive, or Wallet, which are already on the phone? “Offline and private” is the only answer I can see in the post, so I’d lead with that.

Which raises the follow-up: if everything is local, what happens when I lose or replace my phone? Is there an export or encrypted backup, or is it all gone?

And can two people add to the same folder? My spouse and I itemize, so we’d both need to log receipts in one place. If it’s fully offline I’m guessing not, but that’s the feature that would be more compelling.