About Tavvian
Smart, accessible, and meaningful digital tools for everyone.
Who We Are
Tavvian is a creative technology company dedicated to building smart, accessible, and meaningful digital tools. We specialize in creating free online web applications, productivity tools, and AI-driven solutions that make everyday tasks simpler and more efficient.
Founded on the belief that technology should empower, not overwhelm, Tavvian focuses on bridging the gap between complexity and usability. Whether it's helping students learn faster, professionals work smarter, or individuals simplify everyday calculations — our mission is to make useful technology available to everyone.
Tavvian is the product brand of ENDRIANO-HANSEN DIGITAL, a company registered in Norway (org. no. 936 023 223).
Our Flagship Product: UnitHarbor
UnitHarbor is our flagship free online unit converter, built for speed, accuracy, and simplicity. It's designed for anyone who needs quick and reliable conversions.
- 📏 Length Converter – Convert meters, feet, inches, kilometers, miles and more
- ⚖️ Weight Converter – Convert kilograms, pounds, ounces, grams instantly
- 🌡️ Temperature Converter – Convert Celsius, Fahrenheit, and Kelvin
- 💱 Currency Converter – Real-time exchange rate conversions
- 🍳 Recipe Scaling Calculator – Adjust ingredient quantities for any serving size
- 🥗 Food Calories Tracker – Monitor nutrition and calorie intake
- 📚 Knowledge Database – Comprehensive articles for learning and reference
UnitHarbor is completely free to use, with optional Pro tools available for users who want advanced features and functionality. Learn more about UnitHarbor
Our First Android App: Sparo
Sparo is a private savings app for Android that helps you reach your savings goals and see how much of your salary you actually save. No account, no ads – your data stays on your phone. Learn more about Sparo
What We Do
We develop a range of free and premium web applications designed to solve real-world problems in practical, elegant ways. Our projects span across:
- 🧠 AI & Automation – Intelligent systems that save time and boost productivity
- 📊 SaaS Platforms – Smart web applications for creators, freelancers, and small teams
- 🧩 Free Online Utilities – Accessible tools that help everyday users learn, organize, and grow
- 📱 Mobile Apps – Focused, private Android apps for everyday life
- 💡 Creative Solutions – Design, writing, and innovation that bring ideas to life
Every project under Tavvian is built with precision, transparency, and care — crafted to provide real value, not noise.
Our Philosophy
At Tavvian, we believe great technology should feel human. That's why our focus isn't just on building software — it's on helping people.
We create online tools that are simple to use, beautiful to look at, and genuinely helpful. Our goal is to make innovation approachable, trustworthy, and impactful — one tool at a time.
Why Support Us
Many of our web applications and tools are completely free. Community support allows us to:
- Keep our tools open and accessible to everyone
- Continuously improve existing projects
- Develop new, meaningful solutions for everyday challenges
If you believe in building technology that helps people — not just profits — your support helps us make that vision real.