◐ In development
VITAMINH
Scan or search Australian vitamins, supplements, and baby formula to check whether they're legally importable into Vietnam, and see what they actually cost back home in Australia.
Independent software studio · Sydney
One dev.
Real products.
Erron Labs is a one person studio building consumer apps and the data infrastructure behind them. Just me, a keyboard, and too many side projects. Everything here is live, shipped, and maintained.
05Retailers tracked
04Products shipped
∞Commits
01Developer
The flagship
● Live on iOS & Android
HALF PRICE DEALS
Half Price Deals is your ultimate Australian shopping companion. Browse real-time product prices from Woolworths, Coles, Aldi, Chemist Warehouse, and Priceline, all in one place, without the hassle of switching between apps or websites.
Build and manage smart shopping lists tailored to your household needs, and let the app do the heavy lifting. Get instant push notifications when prices drop, when your favourite products go on special, or when a half price deal hits the shelves.
Whether you're a savvy shopper looking to stretch your budget or simply want to stay on top of weekly specials, Half Price Deals gives you the price intelligence you need to shop smarter, save more, and never pay full price again.
- Real-time prices from Woolworths, Coles, Aldi, Chemist Warehouse & Priceline
- Create and manage personal shopping lists
- Favourite products and track their price history
- Push notifications for price drops and specials
- Half price and on-special filters at a glance
- See the price history for any product over time
- Stock info for selected Chemist Warehouse products
Also shipped
● Live
BARNES-HUT ALGORITHM VISUALISER
Interactive browser visualisation of the Barnes-Hut n-body algorithm: watch a 2D field subdivide into quadrants in real time and explore the quadtree that cuts gravitational work from O(n²) to O(n log n).
● Live
SCOUNDREL SHOWDOWN
Descend into the dungeon, fight with cards, and climb the leaderboard. A roguelike card game in the browser, built with Next.js and fully responsive so you can play on any device.
About
Erron Labs is a one-person software studio. No team, no committee deciding what ships next. Just whatever problem is annoying enough that building the fix feels easier than living with it.
Half Price Deals started that way: too many grocery apps, none of them showing half-price deals across more than one retailer at once. Everything else here started the same way: Barnes-Hut because n-body physics is genuinely fun to watch subdivide in real time, Scoundrel Showdown because the original card game deserved a leaderboard.
If something's broken, slow, or missing a feature you'd expect, say so. Every message gets read by an actual person. There's only one of us.
SHIP SOLOBUILD WHAT I'D USENO VC, NO ROADMAP
Got an idea? Let's talk.
Feedback, collabs, bug reports, or just saying hi. I read every message.