Copyright © 2025 Quoc.dev. All rights reserved.
Hi, I'm Quoc!
Full-Stack Mobile Developer
12+ Years of Experience
I design and develop mobile apps with Flutter, Android, iOS, Django, and FastAPI, delivering high-performance, scalable solutions. I’ve built AI apps, educational apps, management systems, and more.

Quoc Truong
Senior Full-Stack Mobile DeveloperI'm Quoc Truong (Tony), a senior full-stack mobile developer with 12+ years of experience crafting high-performance, user-centric apps. I specialize in transforming ideas into seamless mobile experiences that boost user loyalty and drive business growth.
I don’t just build apps, I build solutions tailored to your audience. Whether you need an iOS, Android, or cross-platform app, I ensure a smooth development process from concept to launch. My focus is on delivering real results: higher engagement, increased downloads, and boosted revenue.
Let’s create an app that sets you apart. 🚀
- Age 34
- Location Viet Nam
- Mail contact@quoc.dev
- Phone +84-947655246
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12+
Years of Experience -
40+
Projects Completed -
15+
Happy Clients
Everything about me!
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May 2022 - Present
Freelance Mobile Developer
Collaborate with clients to build custom mobile apps that drive engagement and deliver results.
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July 2018 - May 2022
Mobile Team Lead | eCommerce App Development
Ecom365Drove innovation and technical excellence while leading a team in building seamless eCommerce mobile experiences.
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July 2016 - July 2018
Startup Founder | Passionate Mobile App Developer
Realized my entrepreneurial vision by building and monetizing unique mobile apps, driven by a passion for innovation.
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Sep 2012 - July 2016
Android Developer
SOFTFOUNDRY LTE PTDDeveloped intuitive chat and video calling features for Android apps, boosting engagement and user satisfaction metrics. Collaborated on a passionate team to launch a successful mobile product.
Services I Provide
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01
Custom Mobile App Development
I build native iOS and Android apps or cross-platform solutions with Flutter, delivering high-performance, seamless experiences tailored to your needs.
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02
Backend API Development
I build fast, secure backend APIs using Python frameworks like Django and FastAPI, ensuring seamless integration with mobile and web applications.
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03
UI/UX Design
I craft beautiful, user-friendly mobile interfaces that drive higher retention and conversion rates, focusing on intuitive design and seamless experiences.
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04
App Store & Google Play Release
With 12+ years of experience, I handle store reviewer feedback and resolve issues for a smooth and successful launch.
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05
AI Chatbot Solutions
I build intelligent AI bots that automate routine tasks, provide 24/7 support, and enhance the overall customer experience.
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06
Expert Software Consulting
I guide your mobile app from idea to release, covering backend development, AI integration, and successful App Store/Google Play launches.
Recent completed works
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Tomoria is an advanced AI-powered Flashcards App built with Flutter, delivering a smooth, native experience on both Android and iOS. With Flutter at its core, the app ensures a fast, responsive interface that adapts seamlessly across devices.
Powered by Firebase, Tomoria offers real-time syncing, secure authentication, and seamless social login integration. The app also supports offline mode, allowing users to study anytime, anywhere without an internet connection.
Designed with an intuitive UI, Tomoria provides a sleek, modern experience with effortless navigation. The app includes in-app purchases, unlocking premium features that enhance learning and retention, making studying more efficient and engaging.
- Category Education App
- Time 2024
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AzSalon is a powerful Salon Management App designed for Vietnamese barbershops, hair salons, and nail salons. Built with Flutter, it delivers a seamless experience across Android and iOS, ensuring smooth performance, intuitive navigation, and a responsive UI optimized for local needs.
Powered by a Django backend with a PostgreSQL database, AzSalon securely handles bookings, payments, and client management. Real-time updates keep salon operations running smoothly, providing an efficient solution tailored to the Vietnamese market.
Designed with simplicity in mind, AzSalon features a clean and intuitive UI that enhances user experience. From appointment scheduling to service tracking and payment handling, the app ensures seamless management. Sentry integration enables quick error tracking, guaranteeing uninterrupted service.
- Category Management App
- Time 2024
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Q-Bot is an advanced ChatGPT-powered bot built with Flutter, offering a seamless and responsive experience on Android and iOS. Designed for intuitive interaction, the app provides a smooth and user-friendly interface for effortless communication.
Its backend is powered by FastAPI, ensuring high-speed API performance and real-time query processing. This architecture allows Q-Bot to handle multiple users efficiently, delivering quick and reliable responses with minimal latency.
Leveraging OpenAI’s GPT-4, Q-Bot offers intelligent, context-aware conversations. The app’s sleek design enhances usability, while its robust backend and AI capabilities provide a powerful, responsive chatbot experience.
- Category AI Chatbot
- Time 2023
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EngageAI is a powerful LinkedIn AI Auto Comment tool built with Flutter, delivering a smooth and responsive experience on Android and iOS. Its clean and intuitive UI allows users to automate LinkedIn comments effortlessly, boosting engagement with minimal manual input.
The backend, powered by Python, efficiently handles complex tasks while integrating OpenAI’s GPT-4 to generate intelligent, context-aware comments. EngageAI ensures that each response aligns naturally with LinkedIn post content and tone, creating authentic interactions.
With web scraping capabilities, EngageAI gathers relevant post data in real-time for smarter, data-driven insights. Its user-friendly UI simplifies setup, while the robust backend automates engagement, offering a seamless and efficient experience.
- Category Social
- Time 2023
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Hepta Books is a feature-rich reading app built with Flutter, delivering a seamless experience on Android and iOS. Readers can effortlessly highlight key sections and recall them later, all within an intuitive and responsive UI designed for a distraction-free reading experience.
Powered by Firebase, Hepta Books provides real-time syncing, ensuring that highlights and progress are saved across devices. Whether reading on the go or at home, users enjoy a seamless integration that keeps their notes and highlights always accessible.
With a fully functional offline mode, Hepta Books allows users to read and highlight without an internet connection. The app’s sleek UI ensures smooth navigation, keeping users focused while effortlessly managing and revisiting their saved highlights.
- Category Education App
- Time 2023
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Sine Radio lets users explore and listen to over 300 radio stations from around the world, categorized by country for easy discovery. Designed for radio enthusiasts, the app offers a seamless and immersive listening experience.
Built with Android Kotlin, Sine Radio ensures smooth performance across all Android devices. A web crawler automatically gathers station data, while HLS (HTTP Live Streaming) delivers high-quality audio playback. FCM (Firebase Cloud Messaging) provides push notifications, keeping users updated on their favorite stations.
With an intuitive UI, Sine Radio makes it easy to explore, follow, and enjoy global radio stations, offering a personalized and diverse listening experience.
- Category Utilities
- Time 2023
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AI Chat - Virtual Chatbot is an advanced AI-powered assistant that provides instant help, advice, and guidance on various topics. Whether users need quick answers, brainstorming assistance, or general knowledge, the chatbot delivers intelligent and context-aware responses.
Built with Android Kotlin, AI Chat ensures a smooth and responsive experience on Android devices. The app integrates OpenAI’s cutting-edge technology, enabling natural and precise conversations. Its powerful AI adapts to user queries, making interactions feel intuitive and human-like.
With a clean and user-friendly UI, AI Chat is designed for effortless navigation and quick access to chatbot features. Whether online or offline, the app provides a reliable and intelligent virtual assistant, making everyday problem-solving faster and more efficient.
- Category AI Chatbot
- Time 2023
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Appointment Booking is a solution designed to help users book appointments with doctors, services, or supermarkets, aiming to control the number of customers and reduce COVID-19 transmission.
Built with Flutter for the front-end and Java Spring Boot for the backend, Appointment Booking ensures a seamless and user-friendly experience across platforms.
Experience the convenience and safety of Appointment Booking, simplifying appointment scheduling while promoting social distancing.
- Category Booking
- Time 2023
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F-Messenger is a lightweight and efficient Facebook chat client designed for seamless communication. With a clean and intuitive interface, users can easily view their friend list, send text and multimedia messages, and stay connected while keeping memory usage minimal—perfect for low-end devices.
Built with Android Java, F-Messenger ensures smooth performance across various Android devices. The app leverages XMPP (Extensible Messaging and Presence Protocol) to provide reliable, real-time messaging, maintaining stable and efficient communication between users.
With integrated push notifications, F-Messenger keeps users instantly updated on new messages and conversations, ensuring they never miss an important chat. The app delivers a fast, lightweight, and optimized messaging experience for Facebook users.
- Category Social
- Time 2022
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MEKA is a cutting-edge dating application that allows users to find new nearby friends and engage in seamless conversations. Designed to offer a Tinder-like experience, MEKA empowers users to connect with others, chat via text messages, and share multimedia content such as photos, videos, and locations.
MEKA is built using Android Java, leveraging the power of Firebase for efficient backend services. The Facebook Login integration provides a convenient and secure login method, ensuring a seamless user experience. Additionally, MEKA utilizes XMPP (Extensible Messaging and Presence Protocol) for real-time communication, enabling smooth and reliable messaging between users.
MEKA provides an exceptional platform for users to expand their social circles, meet new friends, and potentially find meaningful relationships. With its user-friendly interface and powerful features, MEKA is your go-to app for connecting with like-minded individuals nearby.
- Category Android & iOS
- Time 2023
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NewsMe is a user-friendly news reading application designed to streamline the news consumption experience. With its efficient features, NewsMe aims to save users time by delivering personalized news updates based on their interests. By leveraging a web crawler and push notifications, NewsMe keeps users informed with top trending news in their favorite categories.
NewsMe is developed using Android Java, ensuring compatibility and a seamless experience for Android users. The application incorporates a web crawler to fetch the latest news updates from various sources. Push notifications powered by FCM (Firebase Cloud Messaging) enable timely delivery of personalized news alerts.
NewsMe simplifies the process of staying informed and reading news by curating personalized news content. Spend less time searching for news and more time exploring what matters most to you with NewsMe.
- Category Android & iOS
- Time 2023
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Soccer Highlights Video is a dynamic app designed to provide users with the latest soccer match highlights from famous teams and leagues, including the English Premier League, FA Cup, and World Cup.
Soccer Highlights Video is developed using Android Java. The app incorporates a web crawler to fetch and update match highlights in real-time. It utilizes a video player for seamless playback of highlight videos. Push notifications powered by FCM (Firebase Cloud Messaging) keep users informed about new highlights.
With Soccer Highlights Video, soccer enthusiasts can stay up to date with the latest match highlights, relive the excitement, and never miss a key moment from their favorite teams and leagues.
- Category Utilities
- Time 2022
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As a passionate mobile app developer, I am dedicated to creating innovative and impactful mobile applications that cater to the unique needs and preferences of users. With over 12 years of experience in the industry, I have had the privilege of building a wide range of mobile apps that have left a lasting impression on their respective users.
Throughout my career, I have developed numerous mobile applications across various domains, including e-commerce, social networking, entertainment, productivity, and more. Each project has been an opportunity for me to showcase my technical expertise and creative problem-solving skills.
With a deep understanding of the mobile app development process, I am adept at translating client requirements into user-friendly and visually appealing applications. I have a strong grasp of different programming languages, frameworks, and technologies, allowing me to choose the most suitable tools for each project.
While it is impossible to list all the apps I have built due to the sheer volume of projects, my portfolio encompasses a diverse range of successful mobile applications that have achieved high user satisfaction and garnered positive feedback.
Rest assured that when you choose me as your mobile app developer, you are collaborating with someone who is not only passionate about the craft but also possesses a wealth of experience and a proven track record of delivering exceptional results. Together, we can bring your app idea to life and create a mobile experience that exceeds your expectations.
- Category Android & iOS
- Time 2015 till now
What client's say?
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Quoc is an exceptionally dedicated and intelligent mobile app developer who consistently delivers outstanding results through hard work and keen problem-solving skills. With his expertise, he builds high-quality mobile apps with efficiency and professionalism.
Jason Tan
Founder of DDA AI Labs
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Quoc's remarkable abilities as a mobile app developer, coupled with his intelligence, efficiency, and strong work ethic, make him an exceptional professional. I wholeheartedly recommend him to anyone seeking top-notch app development services.
Li Voon Loke
Software Developer at DDA AI Labs
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Quoc's exceptional planning skills and flawless execution consistently deliver top-notch results of the utmost quality. I highly recommend him to anyone seeking a professional who can meticulously craft and flawlessly implement effective strategies.
Andrew RyuView
CEO of SpaceT Technology
Get in touch
I'm excited to discuss your project ideas and see how I can contribute. Contact me anytime.
