Wednesday
Coming to iOSWednesday knows when groceries go on sale in Australia.
A free iOS app that predicts when Coles + Woolworths half-price specials will return. Type any product, see when it'll next be half-price. Save items, get pinged Wednesday morning when they drop.
Free forever. No ads. No paid tier. No signup to browse.
Coming soon to the App Store.
No waitlist, no email — just download it when it lands.
Search-first prediction
Type "Weet-Bix" and see when it'll next be half-price, not just whether it is today. Average cycle, predicted window, honest confidence interval.
Both supermarkets, side-by-side
Coles and Woolworths in one search, biggest savings first. See the same product at both stores, which one's cheaper, and each prediction's measured track record.
Wednesday-morning drop alerts
Save items to your watchlist. Get one batched push per week when anything you're tracking goes half-price. No daily spam.
How it works
Wednesday builds on authoritative public price data — the open-source hotprices.org daily Coles dump, the Woolworths browse API, and Coles' own weekly catalogue as a cross-check — accumulating around 18 months of price history per product. For every item with enough sale history, it computes a predicted next-half-price window with an honest confidence score based on cycle consistency.
Built as a side project. Coles price data via the open-source hotprices.org project (Javex/hotprices-au, MIT). Not affiliated with, or endorsed by, Coles or Woolworths — always confirm prices in-store.