Founder @ SezRonix • Building privacy-first software
Flutter • Android • Applied Cryptography • Open Source
I'm a 16 years old indie software developer from India and the founder of SezRonix.
I enjoy building software that prioritizes privacy, thoughtful design, and long-term user trust. My work focuses on creating products where security isn't an afterthought—it's part of the architecture.
Currently, I'm building RozVibe, a privacy-first encrypted journaling app for Android.
Your private thoughts should remain yours.
Instead of relying solely on server-side security, RozVibe encrypts journal entries on-device before they are synchronized to the cloud, allowing users to retain control over their personal data.
- 🔒 Client-side AES-256-GCM encryption
- 🔑 PBKDF2-HMAC-SHA256 key derivation
- ☁️ Secure encrypted cloud synchronization
- 📖 Private journaling
- 😊 Mood tracking & emotional insights
- 📅 Writing streaks
- 🔍 Privacy-preserving encrypted search
- 📱 Clean distraction-free interface
🔗 Links:
- 🌐 Website: rozvibe.me
- 📱 Google Play: Get it on Google Play
One of my goals is to make security claims verifiable rather than trust-based. For that reason, the client-side encryption engine powering RozVibe is open source.
It includes:
- AES-256-GCM encryption
- PBKDF2 key derivation
- Blind-index search architecture
- Cryptographic helpers
- Key lifecycle management
Rather than asking users to trust marketing claims, I prefer publishing the implementation for developers and security researchers to inspect.
| Category | Technologies |
|---|---|
| Languages | Dart • C++ • Java • Python |
| Frameworks | Flutter • Firebase |
| Databases | Cloud Firestore • SQLite |
| Crypto & Tech | AES-256-GCM • PBKDF2-HMAC-SHA256 • HMAC-SHA256 • Riverpod • Firebase Auth • Firebase Analytics • Google AdMob • Git • GitHub |
Android Development • Flutter • Privacy Engineering • Applied Cryptography • Secure Cloud Architecture • Product Design • Open Source • Indie Hacking • Mobile Security • AI-powered Applications
I'm continuously exploring:
- Cryptographic engineering
- Advanced Flutter architecture
- Android security
- Backend system design
- Artificial Intelligence
- Product strategy
- Developer experience
- 🔒 RozVibe: Privacy-first encrypted journaling application.
- 🔐 RozVibe Encryption Core: Open-source client-side encryption engine.
Future repositories will include additional privacy-focused tooling and open-source projects.
- 🌍 Website: https://www.rozvibe.me
- 📧 Email: support@rozvibe.me
- 💼 LinkedIn: LinkedIn URL
- 🐦 X (Twitter): X URL
"Privacy is not merely the protection of data. It is the freedom to be completely honest with yourself."
I believe the best software is built on transparency, thoughtful engineering, and respect for users—not just features. If something I build helps people feel safer, learn something new, or inspires another developer, then it's worth building.
⭐ Thanks for visiting my profile.
Feel free to explore my repositories, open an issue, or reach out if you'd like to discuss Flutter, Android, cryptography, privacy engineering, or open-source software.