SOOUBH
SOURABH SINGH (SOOUBH) • FLUTTER SPECIALIST

APPS THAT
MAKE AN
IMPACT

Lead App & Mobile Developer specializing in Flutter, bespoke mobile applications, offline-first architecture, on-device cryptography, and responsive 3D & mobile systems. Open to freelance work, collaborations, and internships.

Architectural Device Mockup
SHOWCASE PORTFOLIO

Scalability & Performance in Practice

PACTORA
01
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PACTORA

ROLE: LEAD APP DEVELOPER

SECTOR: PRODUCTIVITY & CRYPTOGRAPHY

A fully offline promise ledger app built with Flutter to commit, track, and complete personal and peer-to-peer responsibilities with 100% on-device cryptography and zero cloud footprint.

PLAY STORE

GULLY CRICKET SCORING

ROLE: LEAD APP DEVELOPER

SECTOR: SPORTS & REAL-TIME SYSTEMS

An offline cricket scorekeeping engine featuring ultra-fast scoring byte buffers, local binary disk persistence, floating overlay scoreboards, real-time WebSocket match broadcasts, and AdMob integration.

PLAY STORE
GULLY CRICKET SCORING
02
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GOCRUSH
03
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GOCRUSH

ROLE: LEAD MOBILE DEVELOPER

SECTOR: SOCIAL & ML VERIFICATION

Flutter dating app with Firebase Authentication, Firestore-based swipe matching, ML Kit face verification, geolocation radar, and RevenueCat subscription monetization.

PLAY STORE

LOVINGO

ROLE: LEAD MOBILE DEVELOPER

SECTOR: SOCIAL & AI VOICE

Flutter dating application incorporating real-time voice chat powered by Gemini Live API, Firebase backend, in-app purchases (IAP), and AdMob monetization.

PLAY STORE
LOVINGO
04
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METHODOLOGY

THE
STUDIO

Bespoke mobile engineering that rejects the superficial. We specialize in Flutter, offline-first systems, and on-device cryptography that prioritize structural logic and user privacy.

01

OFFLINE ARCHITECTURE

Deconstructing complex mobile application requirements into offline-first data structures. We implement local relational SQLite and binary KV storage to guarantee zero-latency execution.

02

ON-DEVICE CRYPTOGRAPHY

Architecting privacy-first vaults with AES-256 encryption and zero cloud dependencies. Security logic is executed strictly on-device to ensure complete user privacy and data sovereignty.

03

BESPOKE MOBILE SYSTEMS

Translating high-performance Flutter specifications into responsive, resilient mobile applications with real-time AI capabilities, WebSocket feeds, and deterministic UI states.