Parcourir les catégories
Explorer
Fiverr Pro
Français
$
USD
I will build a secure end to end encrypted chat or messenger app
Kvaratskhelia G
Level 1
À propos de ce service
Need a chat app where messages are actually private not just labeled "secure"? I build real end-to-end encrypted messengers for Android and iOS.
I implement genuine cryptography, not a checkbox: end-to-end encryption (X25519 / AES-GCM), encrypted local storage with SQLCipher, and keys protected by the Android Keystore. Your users' messages stay unreadable to everyone, including the server.
What you can get:
1:1 and group chat with real-time delivery
End-to-end message encryption
Encrypted on-device database (no plaintext stored)
Push notifications, online status, media sharing
Backend on Firebase or a custom Spring Boot server
I've already shipped a production encrypted messenger using BouncyCastle, SQLCipher and Android Security Crypto, with 15+ years of software engineering behind it. You get clean, maintainable code and full source ownership.
Not sure what your app needs? Message me first I'll tell you exactly what's possible, what it costs, and how long it takes. Every build is tailored to you, no copy-paste templates.
Découvrez Kvaratskhelia G
Kvaratskhelia G
Mobile App and Server Side Development
Level 1
- DeGéorgie
- Membre depuisoct. 2021
- Temps de réponse moy.1 heure
- Dernière commande1 mois
Langues
Géorgien, Russe, Anglais
Software Architect | Mobile Fullstack | AI & Computer Vision (15+ Yrs)
Designing scalable, production-ready enterprise solutions. Specialist in Native Android (Kotlin, Compose) & Cross-Platform (Flutter). Robust Backend: Java, Spring Boot, PostgreSQL, Clean Architecture (MVVM/MVI, BLoC). Expert in advanced Computer Vision (OpenCV, TFLite, YOLO models, object tracking). strict coding standards (Clean Controller/Service/Repo flow, strict validation). enterprise-grade code ready to scale. Let's discuss your project architecture. MESSAGE ME FIRST!
Mon portfolio
Autres services de Développement d'applications mobiles I Offre
FAQ
Is this real end-to-end encryption?
Yes. Messages are encrypted on the sender's device and decrypted only on the recipient's. The server — and I — never see plaintext.
Android, iOS, or both?
Both. I build cross-platform with Flutter from a single codebase, or fully native (Kotlin / Swift) if you prefer maximum performance.
Can you use my existing backend or Firebase?
Yes. I can integrate Firebase, connect to your current backend, or build a custom secure Spring Boot server with full control.
Will I own the source code?
Yes. Full source code and ownership are included in every package, so you can maintain or extend the app with any developer later.
I only have an idea, not a full spec. Can you help?
Absolutely. Message me before ordering and I'll scope the features, timeline, and the right package for your project.
