Products, tools, and design — out in the world.
Two live apps, a growing set of free open-source tools for Amazon sellers, and the design work behind them. Try anything below — most of it costs nothing.
Apps we built and run ourselves.
Real products with real users — not just concepts.
Spectra Calculator
Home, car, and loan affordability calculator for the Malaysian market — plain-language breakdowns, no sign-up required.
calculatorapp.spectramsia.com →
byJelly
A practice dashboard built for clinics. Currently testing with a small group of doctors — register for a demo to get early access.
tcm.spectramsia.com →Tools we've open-sourced for Amazon sellers.
Built for our own use, released free on GitHub. Star them, fork them, tell us what's missing.
AMZ Scrapper Pro
Extract product data straight off Amazon search & product pages — price, ASIN, BSR, ratings, variants — export to Excel or CSV in one click.
github.com/khooyc →
Amazon Metadata Tagger
Human-reviewed desktop app that tags AI-generated people in listing images with the synthetic-performer XMP keyword before you upload — everything stays local.
github.com/khooyc →
Amazon Report to Excel
Converts Orders, Settlements, Search Terms, Campaign, Inventory, Returns, and FBA fee reports (TXT/TSV/CSV/FileV2) into clean Excel workbooks — entirely on-device.
github.com/khooyc →Want something like this built for you?
Same team, same tools. Tell us what you're making.