# Custom Application Development Services > Web, desktop SaaS and iOS and Android app development by the founders you talk to: senior engineers on every project and code you own outright. Source: https://authect.com/services/application-development Have a concept for a web or desktop SaaS platform, or an app for iOS and Android? We build it and plan for what comes after launch, with the founders and a senior engineer on every project. ## From idea to a product your users rely on, without losing momentum Authect builds custom applications end to end: **product discovery, design, engineering, testing and launch**, then the improvements that follow. You work directly with the founders, and every project is **led by a senior engineer**, so the people who scope your product are the people who build it. We keep teams small and decisions fast. **AI speeds up our delivery, and an engineer reviews every line** before it ships. You see working software early and often, and the code lives in repositories **you own from day one**. ## End-to-end application development services Whether you're launching a new product or rebuilding one that's holding you back, we cover the whole journey: validating the idea, designing the experience, building it for web and mobile, and keeping it fast and secure after launch. ### Web applications Fast, accessible web apps and customer portals built on modern frameworks, designed around your users' key journeys and ready to scale as your audience grows. ### Mobile apps for iOS and Android Native and cross-platform apps that feel at home on every device, with offline support, push notifications and secure sign-in, published to the App Store and Google Play. ### SaaS platforms Multi-tenant products with subscriptions, roles and permissions, admin tools and usage analytics, built so you can onboard new customers without rebuilding anything. ### AI-powered features Search, assistants, document understanding and automation built into your product where they genuinely help your users, with clear limits and human review where it matters. [Artificial intelligence](https://authect.com/services/artificial-intelligence) ### APIs and integrations Clean, documented APIs and reliable integrations with payment providers, CRMs, ERPs and the other systems your business already depends on. ### Product design Research, flows, prototypes and a design system, so we test the experience with real users before committing to code. [Product and service design](https://authect.com/services/product-design) > Bring your app or SaaS concept. We build it, and plan for the scaling, security and upkeep that follow. [Contact Authect](https://authect.com/contact) ## What you get with Authect's custom application development 1. **Founders and senior engineers, not account managers**: The founders run discovery with you and a senior engineer leads your project from the first sprint. Questions get answered by the people who make the decisions. 2. **Faster delivery with AI, without the shortcuts**: We use AI throughout delivery to move faster, and every line is reviewed by an engineer. You get speed and the quality you'd expect from a senior team. 3. **Working software early and often**: We ship in short increments and demo real, working software regularly, so you can test ideas with users and change direction before it gets expensive. 4. **Security and quality built in from the start**: Code review, automated tests, secure authentication and encrypted data are part of how we build, not a review at the end. 5. **Architecture that grows with you**: We design for the product you have today and the one you're planning, so adding features, users and markets doesn't mean starting over. 6. **Everything you need to own your product**: Code, infrastructure and documentation are yours from day one. If you build an in-house team later, they can pick up the work without us. ## Complete visibility, straight from the people building your product Transparency is at the heart of how we work. It builds trust and accountability, and it means you never have to wonder what is happening on your project. There are no account managers in between: the founders and the senior engineer leading your project are the people you talk to, every week. **What you get:** - Direct access to the founders and the engineer leading your project - Regular demos of working software, not slide decks - A clear view of progress, budget and priorities at any time - Code in repositories you own from day one, so you see every change as it happens ## Cooperation models that fit how your product grows Every model comes with clear responsibilities on both sides, agreed before work starts, so you always know who owns what. ### Fixed-price project A clearly scoped product delivered for an agreed price and timeline. Ideal for MVPs and well-defined projects. Our responsibility: the scope, plan, budget, quality and delivery of the agreed product. Your responsibility: business context, timely feedback and sign-off on the scope. ### Monthly sprints A dedicated team, led by a senior engineer, working in short sprints, billed monthly. Ideal when your priorities evolve as you learn from users. Our responsibility: the team, sprint delivery, engineering quality and transparent reporting. Your responsibility: the product vision and setting priorities with us each sprint. ### Support and evolution After launch, we keep your product fast, secure and up to date, and keep shipping improvements as your business grows. Our responsibility: monitoring, updates, fixes and agreed response times. Your responsibility: reporting issues and planning the next improvements with us. ## How we use AI in delivery AI makes our engineers faster. It never replaces their judgement: an engineer reviews every line before it ships, and your code and data stay private. 1. **Discovery**: AI helps turn workshop notes into draft user stories and open questions. A founder goes through every one with you. 2. **Design**: We use AI to explore layout options and draft interface copy quickly. Our designers make the decisions. 3. **Development**: Coding assistants take the repetitive work, so engineers spend their time on architecture and edge cases. 4. **Testing**: AI suggests test cases and generates test data. Engineers own the test suite and decide what passes. 5. **Release and support**: AI helps read logs and spot issues sooner. A person decides every fix that goes live. ## Key steps in our end-to-end development process Every project follows the same clear path, adjusted to your product. **A founder is involved at every step**, so priorities, budget and progress are never a surprise. 1. **Product discovery**: Workshops with the founders on your users, goals and constraints. You get a written scope, an architecture outline and a plan, from the people who will build it. 2. **Design and prototype**: User flows, wireframes and a clickable prototype you can put in front of real users, then the visual design and a component library for development. 3. **Development**: Short sprints with regular demos of working software. A senior engineer leads the team, reviews the code and keeps the architecture clean as the product grows. 4. **Testing and launch**: Automated and manual testing, security checks and performance tuning, then a smooth release to your users, the App Store or Google Play. 5. **Support and growth**: After launch, we monitor, fix and improve, and keep shipping the features your users ask for as your business grows. ## Product-centric vs. project-centric delivery Most of our clients start with a project and grow into a product team. Here's how the two approaches differ, so you can choose the one that fits where your product is today. | | Product-centric delivery | Project-centric delivery | |---|---|---| | Focus | Ongoing value for your users and long-term ownership of the product. | Delivering an agreed scope within a fixed timeline and budget. | | Team | A stable team, led by a senior engineer, that stays with your product as it grows. | A team assembled for the project, handing over cleanly at the end. | | Planning | Priorities set with you each sprint, based on what users tell us. | A written scope and plan agreed before development starts. | | Success measured by | Business impact and how users respond to each release. | Delivering the agreed scope on time and on budget. | | Best for | Products with evolving requirements and a long life ahead. | MVPs and well-defined projects with a clear finish line. | > Need an application that fits the systems you already use? Talk to the founders who'll build it. [Contact Authect](https://authect.com/contact) ## Industry-specific use cases for custom application development ### Fintech Payment flows, digital banking and wallet apps, onboarding with identity checks, lending and investment platforms, and the back-office tools that keep money moving correctly, with audit trails and strong authentication built in. [Fintech software](https://authect.com/industries/fintech) ### Healthcare Patient booking and reminder apps, telehealth, clinic and practice management tools, and secure portals for patient records, designed to be accessible and to protect health data from the first line of code. [Healthcare software](https://authect.com/industries/healthcare) ### Insurance Policy management and quoting tools, claims apps with document upload and status tracking, customer self-service portals and the integrations that connect them to your core systems. [Insurance software](https://authect.com/industries/insurance) ### Logistics Fleet and delivery tracking, driver apps with route and proof-of-delivery features, warehouse tools and customer tracking pages that give everyone a live view of every shipment. [Logistics software](https://authect.com/industries/logistics) ### Retail Online stores and marketplaces, loyalty and mobile shopping apps, inventory and order management, and the integrations with payments, shipping and point of sale that tie them together. [Retail software](https://authect.com/industries/retail) ### Government Citizen service portals, online applications and payments, case management for public teams and accessible digital services built to strict security and accessibility standards. [Government software](https://authect.com/industries/government) ## Tools and technologies that we use We choose proven, well-supported technologies that fit your product and your team, so it stays easy to maintain and hire for long after launch. ### Web front end TypeScript, React and Next.js for fast, accessible interfaces, with design systems built in Tailwind CSS or your existing component library. ### Mobile development Swift for iOS, Kotlin for Android, and React Native or Flutter when one cross-platform codebase is the better fit for your product. ### Back end and APIs Node.js, Python, .NET and Go services with REST and GraphQL APIs, designed for clear contracts, versioning and observability. ### Databases and storage PostgreSQL, MySQL, MongoDB and Redis, chosen for your data and how it's used, with backups and migrations handled from day one. ### Cloud and infrastructure AWS, Microsoft Azure, Google Cloud and Vercel, with infrastructure as code in Terraform so every environment can be recreated reliably. ### DevOps and quality CI/CD pipelines, automated testing with Playwright and unit test suites, containers with Docker and monitoring that alerts us before your users notice. ### AI and machine learning Large language models from leading providers, retrieval over your own data, and the evaluation and guardrails that keep AI features accurate and safe. ## What every Authect project includes Whatever we build, these come as standard, not as extras you have to ask for. - **Code review on every change**: An engineer reviews every line before it ships, including code written with AI assistance. - **Automated tests**: Tests around the parts that matter most, run on every change so regressions are caught early. - **CI/CD pipelines**: Automated builds and deployments, so releases are routine rather than risky. - **Security by default**: Secure authentication, encrypted data and dependency checks from the first sprint. - **Accessibility**: Interfaces designed and tested to be usable by everyone, on every device. - **Documentation**: Architecture notes and setup guides, so your team or a future partner can pick up the work. - **Monitoring**: Error tracking and alerts that tell us about problems before your users do. - **Ownership from day one**: Repositories, cloud accounts and designs in your name from the first commit. ## Why partner with Authect for application development 1. **Founder-led, senior-engineer-led**: You talk to the founders who build your project, never a salesperson. Every project is led by a senior engineer, from the first workshop to launch. 2. **AI-accelerated, human-reviewed**: We use AI to move faster at every stage of delivery, and an engineer reviews every line before it ships. You get the speed without the shortcuts. 3. **Everything is yours**: Code, infrastructure and documentation live in accounts you own from day one. No lock-in: you can take the product anywhere, at any time. ## FAQs about custom application development ### How long does it take to build a custom application? It depends on the scope. A focused MVP can often launch within a few months, while larger platforms are delivered in stages. After discovery, you get a written plan with milestones, so you know what to expect before development starts. ### How much does custom application development cost? Cost depends on the features, platforms and integrations you need. We offer fixed-price projects for well-defined scopes and monthly sprints when priorities are still evolving. After a short discovery, you get a clear estimate from the founders, not a sales team. ### Who will work on my project? A small team led by a senior engineer, with the founders involved from discovery to launch. You talk to the people building your product directly, and you know who is on your team from the start. ### Do I own the code and the product? Yes. The code, designs, infrastructure and documentation are yours from day one, in repositories and accounts you control. There is no lock-in: you can continue with us, bring the work in-house or move it elsewhere. ### How do you use AI in development? We use AI tools to speed up work such as drafting code, generating tests and analysing logs. An engineer reviews every line before it ships, and your code and data are never used in ways you haven't agreed to. ### Can you take over or improve an existing application? Yes. We start with a review of the code, architecture and infrastructure, then agree on a plan: stabilise what's there, improve what's slowing you down and keep shipping new features without disrupting your users. ## About Authect - Authect is a founder-led software development studio: clients talk to the founders who build their project, never a salesperson. - Every project is led by a senior engineer. Delivery is AI-accelerated, and an engineer reviews every line before it ships. - Clients own their code, infrastructure and designs from day one, with no lock-in. - Legal entity: AUTHECT - FZCO, Trade License No. 70505 (IFZA). Registered office: Building A1, Dubai Digital Park, Dubai Silicon Oasis, Dubai, United Arab Emirates. - The team works in Dubai (Dubai Marina, Business Bay, Dubai Silicon Oasis) and in Spain (Madrid and Marbella), and works with partners in Lithuania. - Clients across Europe, the Middle East and beyond; areas served include Dubai, Madrid, Marbella, Málaga, United Arab Emirates, Spain, Lithuania, Sweden, Norway, Denmark. - Founders: Pranas Mickevicius (Chief Executive Officer), Oscar Arson Saiz (Chief Technology Officer). - Cooperation models: fixed-price projects, monthly sprints, and support and evolution. - Contact: info@authect.com, +971 50 246 5223, or https://authect.com/contact. A founder replies within one working day. - Profiles: LinkedIn https://www.linkedin.com/company/authect/, Instagram https://www.instagram.com/useauthect/, X https://x.com/useauthect, TikTok https://www.tiktok.com/@useauthect, Facebook https://www.facebook.com/profile.php?id=61581141524137.