Custom Software Development
Tailored software built around your workflows, goals, and growth plans.
Learn moreEngr Haris Khan · Full-Stack Developer
Websites, web apps & mobile apps
I build custom software — websites, web apps, and mobile apps for any field or project — plus my own free products to help you, with no cost, no sign-up, and no limits.
Stack & skills
Languages and tools I use to build websites, apps, and production software.
- JavaScript
- TypeScript
- React
- Next.js
- Vue.js
- Node.js
- Express.js
- React Native
- Flutter
- Kotlin
- Swift
- Tailwind CSS
- HTML & CSS
- Python
- PostgreSQL
- MongoDB
- REST APIs
- GraphQL
- Firebase
- AWS
- Docker
- Git & GitHub
- Figma
- UI/UX
What I deliver
Websites, web apps & mobile development
Custom software for every field — from personal projects and startups to education, healthcare, retail, and enterprise teams.
Web Application Development
Fast, secure, and modern web apps that convert visitors into customers.
Learn moreMobile App Development
Native-quality iOS and Android apps that keep customers engaged.
Learn moreUI/UX Design
Clear interfaces and journeys that make complex products easy to use.
Learn moreCloud & DevOps
Reliable cloud infrastructure, CI/CD, and deployment pipelines.
Learn moreAI / ML Solutions
Practical AI features that automate work and unlock smarter decisions.
Learn moreWho I work with
Solutions for every field and stage
Whether you are in education, healthcare, e-commerce, a startup, or any other field — I tailor websites, web apps, and mobile apps to your goals.
Startups & Founders
MVP to market-ready product without wasting runway.
ExploreSmall & Medium Businesses
Practical systems that save time and increase revenue.
ExploreE‑commerce & Retail
Sell more with better storefronts, checkout, and ops tools.
ExploreEducation & EdTech
Learning platforms, portals, and content systems that scale.
ExploreHealthcare & Professional Services
Secure portals and scheduling systems for service providers.
ExploreEnterprises & Growing Teams
Internal platforms that unify data, people, and processes.
ExploreMy Free Products
Free tools I built to help you
Alongside client projects, I create and maintain my own products — PDF editors, dev tools, calculators, SEO utilities, and mobile apps. Fully free, always.
Document ToolsFree
CS PDF Editor
Merge, split, compress, convert, edit, protect, and scan PDFs. Everything runs locally in your browser.
pdfeditor.thecodesplitter.com
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Media ToolsFree
CS Any Video Downloader
Download videos from YouTube, TikTok, Instagram, Facebook, X, Reddit, Vimeo and more — free, fast, and private.
free-video-downloader.thecodesplitter.com
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Developer ToolsFree
CS Dev Tools
Free online developer tools for formatting, validating, encoding, and transforming JSON, SQL, YAML, JWT, Base64, and more.
developer-tools.thecodesplitter.com
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Image ToolsFree
CS Image Converter
Convert PNG, JPEG, WebP, GIF, BMP, AVIF and ICO. Resize, rotate, compress, and edit privately — no account required.
image-converter.thecodesplitter.com
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CalculatorsFree
CS Calculators
Free, responsive online calculators — EMI, BMI, age, GST, currency, unit conversion, scientific calculator, and more.
calculators.thecodesplitter.com
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SEO ToolsFree
CS Web SEO Tools
Free tools for keyword research, meta tags, sitemaps, robots.txt, schema markup, Open Graph, and more.
free-seo-tools.thecodesplitter.com
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Mobile AppsFree
Free Apps Ocean
Discover beautifully crafted, completely free Android and iOS apps — no subscriptions, no hidden fees.
freeapps.thecodesplitter.com
Learn moreAcademia
Free learning for developers
Free courses, tutorials, and resources for developers — alongside my websites, web apps, mobile apps, and free products.
Visit AcademiaNeed a website, web app, or mobile app?
Tell me about your project — websites, web apps, mobile apps, or any custom software solution. I will reply with a clear next step. And try my free products if you need tools right away.