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Kaushik Bhingradiya's avatar
Kaushik Bhingradiya
proSurat, India
Mobile MVP Developer for Startups | Flutter, React Native.
Mobile MVP Developer for Startups | Flutter, React Native.
Cover image for GME Time Tracker Application Development
GME Time Tracker Application Development
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Cover image for HealthcareLink Mobile App Development
HealthcareLink Mobile App Development
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Cover image for RandaLogs Rider — Mobile Delivery
RandaLogs Rider — Mobile Delivery Rider App Overview RandaLogs Rider is a cross-platform mobile application built for delivery riders and courier drivers in Nigeria. The app manages the complete rider journey from phone verification and document approval to receiving nearby delivery jobs, navigation, real-time tracking, customer communication, delivery completion, and cash collection. The application was delivered for both Android and iOS using Flutter. Problem Statement The delivery platform needed an efficient way to assign orders to available riders based on proximity and track each delivery until completion. Riders needed a mobile-first workflow that allowed them to quickly accept jobs, locate pickup and drop-off points, navigate between locations, update delivery status, communicate with customers, and manage Cash on Delivery orders without relying on multiple tools. Solution RandaLogs Rider brings the full delivery workflow into one application. After verifying their phone number, riders complete registration by uploading identity and vehicle documents for approval. Once approved, they can go online, continuously share their location, receive nearby orders in real time, view routes on a map, complete deliveries, and update payment and delivery statuses. Key Features OTP Authentication: Firebase Phone Authentication verifies riders through SMS before account creation. Rider Verification: Riders upload ID and vehicle documents, with access to orders restricted until approval. Online Availability & Live Tracking: Riders can switch online while foreground location services continuously send their position. Nearby Order Assignment: Current rider location is sent to the backend, which assigns nearby delivery requests. Real-Time Order Updates: Socket.IO (http://Socket.IO) keeps location, order state, and delivery activity synchronized. Maps & Navigation: Google Maps SDK and Directions API display pickup/drop-off locations and route polylines. Delivery & COD Management: Riders update pickup and delivery states and record cash collection at the required stage. Customer Chat: In-app messaging allows riders to contact customers without leaving the delivery workflow. Push Notifications: Firebase Cloud Messaging and APNs notify riders about new jobs and order updates. Technical Highlights The app was built with Flutter and Dart, using GetX for state management and dependency injection. A custom REST API handles backend communication, while Socket.IO (http://Socket.IO) supports real-time events. Firebase provides Phone Authentication, Cloud Messaging, App Check, and Crashlytics. Device location is captured through Geolocator, with foreground services maintaining updates while riders are travelling. Challenges & Solutions A key challenge was maintaining reliable live location while handling different Android and iOS permission requirements. The implementation combined native permission flows with foreground location services and required additional work to satisfy Apple’s review requirements. Real-time synchronization between rider location and order status also required careful Socket.IO (http://Socket.IO) handling. Results & Impact The two-person team completed the project in approximately two months and shipped the rider application on both Android and iOS. The finished product supports the complete operational flow from rider onboarding and verification through order assignment, navigation, delivery tracking, communication, and cash collection. Key Takeaway RandaLogs Rider demonstrates how real-time location, logistics workflows, mapping, authentication, and payment-status handling can be combined into a focused mobile experience built for riders working continuously on the move.
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Cover image for VEDV One app, four roles, turning
VEDV One app, four roles, turning printed textbooks into a connected school platform. Overview VEDV is a Flutter app (iOS, Android, web/desktop) that serves as VEDV Publication's all-in-one school platform. From a single codebase it presents four different experiences based on login , Student, Teacher, School Admin, or Guest/Parent with UI gated by role flags. At its core, it turns printed textbooks into connected digital lessons: students scan a QR code on a physical book and land directly on the matching video, PDF, quiz, or test. Around that sits a full learning library, three Gemini-powered AI assistants, and a School Hub that auto-generates school documents all layered over one educational-safety policy that keeps AI responses age- and subject-appropriate. For teachers and admins, the same app doubles as a school-operations backbone: attendance, marks, marksheet and ID-card generation, certificates, fees, notices, calendars, and real-time 1:1 chat. The Problem Schools run on disconnected tools one system for content, another for attendance, spreadsheets for fees, WhatsApp for parent updates with no link between a printed textbook and any digital follow-up. A publisher's book is a dead end once printed. The result is duplicated data entry and no single, trustworthy view into a child's attendance, results, or fees. VEDV bridges that gap: one role-aware app where the QR scan turns a static book into an interactive lesson, and the same platform runs the school's day-to-day operations so content and operations reinforce each other instead of living in silos. Key Features QR Book Scan — Scans a printed textbook's QR code and opens the exact matching content (video, PDF, quiz, audiobook), filtered by role, students see learning material, teachers additionally get lesson plans and answer keys. AI Assistant with Chapter-PDF & Multi-Format Export (Unique) — Type, speak, or photograph a question; the AI answers grounded in the actual chapter PDF and can export a real downloadable worksheet, lesson, or presentation as PDF, PowerPoint, or Word. School Hub AI Design Generator (Unique) — Describes a poster, ID card, or notice in plain language, asks smart follow-up questions, then generates a print-ready design using the school's real logo and brand colors. STEAM-L AI Tutoring Suite (Unique) — Six subjects (Science, Tech, Engineering, Arts, Math, Languages), each with an AI tutor, auto-generated quizzes, an English corrector, and a full voice-mode conversation gamified with streaks, XP, and hearts. Tech Stack Mobile: Flutter · Dart · GetX (state, routing, DI) · GetStorage (local persistence). Backend: REST API via Dio · Laravel · MySQL · Firebase (Auth, Realtime Database for chat/presence, Cloud Messaging). AI: Google Gemini (routed through a shared safety-guardrail layer). Infra: GitHub · Sentry (crash/performance monitoring). Results & Key Takeaways AI responses are unreliable in raw form the real fix was building a robust clean-up layer that recovers useful content even from malformed AI output, rather than trusting the model directly. Never hard-wire a single AI model each request tries a preferred model and falls back through alternatives with retries, since models get updated or retired often. Security gap flagged for next iteration: AI API keys currently live inside the app itself and should move server-side before wider distribution. The same AI-handling logic (retries, fallbacks, safety rules) was duplicated across features next step is consolidating it into one shared component. The "one app, four roles" model worked well but role-permission logic is scattered across screens recommend centralizing role management into a single control point.
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QA Tester(4)
Savan Badani's avatar
Savan Badani
Surat, India
React Native Expert | Mobile App Development
New to Contra
React Native Expert | Mobile App Development
Cover image for GoalPrize: Customers help restaurants reach
GoalPrize: Customers help restaurants reach visit goals; top spenders on Goalprize Leaderboard win digital gift cards.
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Cover image for SaaS mobile visitor management system
SaaS mobile visitor management system with real-time check-ins, approvals, and secure notifications for employees and guests.
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Cover image for A founder came to me
A founder came to me with a React Native app that crashed on 1 in 5 launches. At first, it looked like a normal production bug. But after checking the crash logs, build config, and app startup flow, the real issue was deeper: The app was loading too many things at startup. Firebase, API calls, SDK initialization, storage checks, navigation setup, and analytics were all running at the same time. Result? The app became unstable before the first screen even loaded. Here’s what I fixed: ✅ Moved non-critical SDK setup after app launch ✅ Added safer error handling during startup ✅ Optimized API calls on the first screen ✅ Reduced unnecessary re-renders ✅ Cleaned up native build warnings ✅ Tested launch behavior on real Android and iOS devices After the fix, the app opened smoothly and the crash rate dropped. This is why React Native production work is not only about writing screens. Sometimes the real value is finding the hidden issue that users never explain clearly. They just say: “The app crashes sometimes.” But behind that one sentence, there can be startup performance issues, memory pressure, SDK conflicts, bad API handling, or native build problems. That’s the kind of problem I help founders and startups solve. If your React Native app is crashing, slow, stuck in review, or hard to maintain, I can help you find the real issue and fix it properly. #ReactNative #MobileAppDevelopment #iOSDevelopment #AndroidDevelopment #Firebase #AppPerformance #StartupApps #FreelanceDeveloper
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Cover image for PetsPositive is a social platform
PetsPositive is a social platform for pet lovers where users can create pet profiles, share photos and videos, connect with other pet owners, and engage with the community through real-time interactions in a secure environment.
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QA Tester(2)
Manan Solanki's avatar
Manan Solanki
Surat, India
Expert QA Engineer | Project Manager 👨‍💻
Expert QA Engineer | Project Manager 👨‍💻
Cover image for Accessibility QA(WCAG 2.1)
Accessibility QA(WCAG 2.1)
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Cover image for Contentstack | QA Engineer
Contentstack | QA Engineer
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Cover image for MatchKicks | CRO/QA
MatchKicks | CRO/QA
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Cover image for Smarty.ai | Product Analyst/QA
Smarty.ai | Product Analyst/QA
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QA Tester(7)
Jimish Parekh 's avatar
Jimish Parekh
Ahmedabad, India
Blockchain Developer|Smart Contract Engineer
Blockchain Developer|Smart Contract Engineer
Cover image for Biconomy Safety(Staking)
Biconomy Safety(Staking)
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Cover image for Nord Finance
Nord Finance
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Cover image for SecureOn
SecureOn
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Cover image for Money hero - Tezos Onramp Fiat to Crypto
Money hero - Tezos Onramp Fiat to Crypto
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QA Tester(1)
Ayush Ramani's avatar
Ayush Ramani
Ahmedabad, India
QA Tester: Ensuring Flawless User Experience
QA Tester: Ensuring Flawless User Experience
Cover image for UI/UX Testing
UI/UX Testing
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Cover image for Functional software testing(Bug hunting)
Functional software testing(Bug hunting)
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Cover image for Manual Software testing
Manual Software testing
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Harshita Jain's avatar
Harshita Jain
Surat, India
Detail-Oriented QA Tester with Admin Background
Detail-Oriented QA Tester with Admin Background
Cover image for Executive Assistant - Virtual Assistant
Executive Assistant - Virtual Assistant
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Cover image for Mobile App Testing for Project tree
Mobile App Testing for Project tree
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Cover image for Empowering Life Coaching Services
Empowering Life Coaching Services
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Cover image for Empathy and active listener with motivation
Empathy and active listener with motivation
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QA Tester(2)