Calendar Vault

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  Home Screen, Tap on September 2025 to go on vault

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  Vault Settings

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  Password Screen

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  Users can hide data here

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  Users can use the Calendar to save events.

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  Change icon to real calendar

Inspiration

Today, privacy is fragile. Vault apps are too obvious — anyone snooping through your phone instantly knows where to look. It’s like locking your diary and labeling it “SECRET.”

What it does

Open the app, see a clean calendar interface. Tap and hold on a pre-set date, enter your PIN. Voilà! Your private media is revealed. Everything is encrypted, offline-accessible, and never backed up to cloud without your permission.

How we built it

Tech Stack: SwiftUI for modern, responsive UI CoreData & FileManager for secure local storage Strong Authentication (4 and 6 digit passcode)

Challenges we ran into

Designing a calendar UI that looks native yet functions as a vault was tricky. We had to make it both intuitive for users and completely unrecognizable as a security app to outsiders.

Accomplishments that we're proud of

Fully working MVP built in SwiftUI – modern, clean, and fully integrated with native iOS features. Innovative unlocking mechanism using date-tap sequences and Face ID—adds real stealth value beyond just a password lock. Decoy vault system for pressure situations—adds an extra layer of psychological and digital safety. End-to-end offline encryption – media stays local, encrypted, and inaccessible without proper unlock.

What we learned

How to build disguised apps that look like one thing but function entirely differently—a powerful approach for privacy-focused tools. How to leverage SwiftUI for complex gesture and calendar interactions, which is not its primary use case.

What's next for Calendar Vault

App Store launch with strong privacy-focused branding and education. App Store Optimization & stealth icon packs to blend the app further into other utilities on a user’s phone.

Built With

• swiftui