UP - Unbreakable Privacy

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  RevenueCatSDK

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  App Logo

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  1 screen

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  Lock screen

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  After scan user face screen

Inspiration

"The inspiration behind this app is deeply personal. A close friend of mine went through a devastating experience when an individual took unauthorized screenshots of her private photos and leaked them online, causing severe emotional distress. I realized that traditional chat apps only protect data on servers, but they fail completely in the real world when someone physically looks over your shoulder or covertly grabs your device. I wanted to build a bulletproof solution to ensure that no one else ever has to go through what my friend did."

What it does

1.Presence-Based Lock: Implements background biometric/facial detection logic behind a black screen to decrypt and display chat content only to the authenticated owner. 2.FlexChat Unexist Technology: Instantly hides active chats or renders them completely invisible the moment an unauthorized face or a second person looks over the user's shoulder. 3.10s Photo Alerts & Self-Destruct: Enforces a strict 10-second countdown timer for shared private media, triggering permanent auto-deletion to leave zero digital footprint. 4.Anti-Leak Protective Shield: Systematically blocks system-level screenshots, screen recordings, and embeds a dynamic security watermark onto received media to prevent external camera leaks. 5.Blockchain Decentralized Network: Cryptographically secures transaction logs, hashes, and verification metadata on a decentralized ledger for bulletproof immutability. 6.RevenueCat Subscription Core: Integrates the RevenueCat SDK to safely manage premium monetization configurations, unlocking advanced privacy controls and increased blockchain storage parameters through secure sandbox entitlements.

How we built it

1.Smartphone-Only Sprint: Orchestrated, designed, and fully architected the entire high-security software blueprint directly from a smartphone over an intense 3-day development cycle. 2.AI-Guided Architecture: Leveraged advanced generative AI tools to wireframe the complete backend system logic and construct complex system flowcharts without a traditional laptop or desktop workstation environment.

Challenges we ran into

1.Hardware & Environment Constraints: Operating entirely without a laptop or desktop workstation presented a significant logistical barrier. Mapping complex software architecture, formatting extensive code blocks, and editing high-resolution system layouts purely on a smartphone screen demanded extreme patience and creative workaround strategies. 2.Low-Latency Vision Logic: Designing the theoretical background triggers for "FlexChat Unexist" required intense structuring. Ensuring that background face-detection logic could instantaneously hide UI assets without destroying the device's battery or processor layout was a complex edge-case to plan. 3.Sandbox Entitlemen Structuring: Architecting the precise sandbox validation flow within RevenueCat (CustomerInfo) to securely lock and unlock specific decentralized blockchain sync limits without a live, published production backend required deep logic mapping and strict documentation checks.

Accomplishments that we're proud of

1.Breaking the Laptop Barrier: Overcoming severe resource limitations by successfully designing an international hackathon-grade system architecture and presentation completely on a mobile screen. 2.Deep RevenueCat & Security Synergy: Creating a seamless structural connection where critical user privacy features (like customized self-destruct timers and ledger limits) are tied directly to 3.Zero-Trust UI Flow: Successfully mapping out a highly functional, secure interface logic that mitigates both digital data hacks and real-world physical screen snooping.

What we learned

1.The Power of Resourcefulness: Understood that a lack of traditional developer hardware (laptops/MacBooks) cannot stop an impactful idea from being fully realized when using creative problem-solving and AI. 2.Subscription State Management: Gained deep knowledge on how tools like RevenueCat manage entitlements (CustomerInfo) locally to track, authorize, and unlock restricted application levels safely. 3.Cryptographic Security Logic: Learned the real-world importance of combining on-device face verification triggers with immutable blockchain storage to secure user metadata against leaks.

What's next for UP-Unbreakable Privacy

1.Full Production Coding: Transitioning the verified system blueprint and architecture layouts into fully operational, multi-platform code (Flutter/React Native) using comprehensive cloud IDEs. 2.Real-Time Model Optimization: Refining the "FlexChat Unexist" tracking logic to use highly optimized, low-latency machine learning models for instantaneous shoulder-surfing response times. 3.RevenueCat Live Launch: Transitioning from the mock sandbox tracking infrastructure into a production-ready, live Apple App Store and Google Play Store deployment to roll out global secure subscriptions.

Student Domain & Identification Note:

My High School (Swaraj Bal Niketan H S School, Code: 542073) conducts official communications using Gmail accounts tied to the school identity, which matches my registered email prefix. I have my official MPBSE Higher Secondary Examination Certificate (June 2026) and Parental Consent Form fully verified and ready for instant automated or manual audit upon request.

Built With

• canva
• figma
• github
• revenuecatsdk
• smartphone