About Agus
Agus Purwantoro is the founder of Thrive Calculator, an online fee calculator platform designed to make everyday calculation accurate, and free for everyone.
He handles every part of the platform, from building calculators and writing guides to verifying data sources and maintaining code quality. His goal is that every visitor gets reliable numbers they can trust, from checking platform fees to planning a monthly budget.
Background
With a background in software development and a passion for creating practical web tools, Agus built Thrive Calculator from the ground up to solve a simple problem: finding reliable, easy-to-use calculators without complexity and easy to understand for general audience.
Agus works as a full-stack developer and technical writer. When freelancing, he always had trouble deciding how to quote and invoice clients, and which payment platform to use. So he listed every platform he used, pulled the fee data straight from each platform's official source, and built calculators to see what he would actually receive after all the fees were deducted.
Expertise
Agus specializes in:
- Full-stack web development: make a fast, accessible, and user-friendly web applications
- Clean design: clean interfaces that prioritize user experience
- Performance optimization: develop uncluttered web apps that adhere to best practices
- Technical writing: creating clear documentation and educational content
Connect
Agus is active on LinkedIn, where he shares insights about web development.