# Our Technology Stack > Explore App369's technology stack: Flutter, Vue.js, Node.js, Firebase, Google Cloud, and 25+ more technologies across mobile, web, backend, cloud, and AI/ML. Canonical: https://app369.com/technology/ We work with 30+ technologies across 8 categories to deliver the right solution for every project. Here is the full stack that powers our mobile apps, web platforms, and cloud infrastructure. ## **Mobile Development** Cross-platform and native frameworks for iOS and Android applications. ### **Flutter** Google's cross-platform UI framework for building natively compiled apps from a single Dart codebase. Learn more ### **Dart** Client-optimized programming language for fast apps on any platform. The primary language powering Flutter applications. ### **Swift** Apple's modern programming language for iOS and macOS development. Delivers native performance and access to the full Apple ecosystem. Learn more ### **Kotlin** Modern, concise language for Android development. Google's preferred language for building Android applications. ### **React Native** Meta's JavaScript-based framework for building native mobile apps. Ideal for teams with existing React web expertise. Learn more ## **Web Development** Modern frameworks and languages for fast, SEO-friendly web applications. ### **Vue.js** Progressive JavaScript framework for building user interfaces. Known for its gentle learning curve and excellent developer experience. Learn more ### **Nuxt.js** Full-stack Vue.js framework with server-side rendering, static generation, and powerful SEO capabilities built in. Learn more ### **React** Meta's popular JavaScript library for building component-based user interfaces. Extensive ecosystem and community support. Learn more ### **Next.js** React framework with hybrid static and server rendering, TypeScript support, and smart bundling for production-grade web apps. Learn more ### **TypeScript** Typed superset of JavaScript that catches errors at compile time. Used across all our web and Node.js projects for improved reliability. ## **Backend** Server-side technologies for APIs, business logic, and data processing. ### **Node.js** JavaScript runtime for building fast, scalable server-side applications. Powers our REST APIs and real-time services. ### **Express** Minimal and flexible Node.js web framework. The foundation for our custom API servers and middleware. ### **Firebase** Google's app development platform with real-time database, authentication, cloud functions, and hosting out of the box. ### **Google Cloud Functions** Serverless compute for event-driven architectures. Scales automatically and charges only for execution time. ## **Cloud & DevOps** Infrastructure, deployment, and continuous delivery pipelines. ### **Google Cloud Platform** Enterprise-grade cloud infrastructure for computing, storage, networking, and machine learning services. ### **Firebase** Backend-as-a-service for rapid prototyping and production apps. Includes Firestore, Auth, Cloud Functions, and Hosting. ### **AWS** Amazon Web Services for clients requiring specific AWS services. S3, Lambda, EC2, and more. ### **Docker** Containerization platform for consistent development, testing, and deployment environments across all projects. ### **GitHub Actions** CI/CD automation for testing, building, and deploying code. Integrated into every project for reliable delivery. ## **Design** Tools for UI/UX design, prototyping, and creative asset production. ### **Figma** Collaborative design platform for UI/UX. Our primary tool for wireframes, prototypes, and design systems. Learn more ### **Adobe Creative Suite** Industry-standard tools for graphic design, photo editing, and video production. Used for branding and marketing assets. Learn more ### **Sketch** Vector design tool for macOS, used for interface design and prototyping when client teams prefer Sketch workflows. Learn more ## **Databases** Data storage solutions for different performance and scalability requirements. ### **Firestore** NoSQL document database from Google Cloud. Real-time sync, offline support, and automatic scaling for mobile and web apps. ### **MongoDB** Document-oriented NoSQL database for flexible schema design. Ideal for content-heavy applications and rapid prototyping. ### **Redis** In-memory data store for caching, session management, and real-time features. Delivers sub-millisecond response times. ## **E-Commerce** Platforms and payment tools for online stores and subscription-based products. ### **Shopify** Leading e-commerce platform for custom storefronts, theme development, and app integrations. ### **Stripe** Payment processing for internet businesses. PCI-compliant, supports subscriptions, one-time payments, and marketplace payouts. ### **RevenueCat** Subscription management for mobile apps. Handles in-app purchases across iOS and Android with real-time analytics. ## **AI/ML** Artificial intelligence and machine learning tools for intelligent automation. ### **OpenAI API** GPT models for text generation, classification, summarization, and conversational AI features in client applications. ### **Google Vertex AI** Google's unified ML platform for training, deploying, and managing machine learning models at scale. ### **TensorFlow** Open-source ML framework for building and deploying custom models. Used for image recognition, NLP, and predictive analytics. ### **LangChain** Framework for building applications powered by language models. Enables RAG, agents, and complex AI workflows. ## **Prefer a fixed price?** Fixed scope, fixed price, paid upfront. The work happens in writing; no call needed. - [**Web App MVP Sprint**from $6,000A scoped web app MVP in Vue/Nuxt or React, with a fixed quote after a $450 written scoping.](https://app369.com/fixed-price/web-app-mvp/) - [**App Fix Ticket**from $450One reproducible bug in an existing mobile or web app, diagnosed and fixed.](https://app369.com/fixed-price/flutter-firebase-bug-fix/) - [**AI Feature or Agent Build**$2,500One LLM feature or agent wired into your app or tools, with an eval set that shows how well it works.](https://app369.com/fixed-price/ai-feature-development/) ## **Need Help Choosing the Right Stack? ** Simon can recommend the right technology combination for your project scope, timeline, and budget. Consultations are $100 per 15 minutes, paid upfront. [**Get in Touch**](https://app369.com/contact/) [**View Our Work**](https://app369.com/portfolio/)