Coles and Woolworths continue to refresh their weekly specials catalogues every Wednesday, a cadence both chains have maintained for years and that has become the de facto shopping calendar for millions of Australian households. Aldi, by contrast, runs its own separate cycle built around "Super Savers" everyday-low-price lines plus rotating "Special Buys" that appear on set days each week rather than a single catalogue changeover.
For shoppers, the practical takeaway hasn't changed: the best time to plan a big weekly shop is Wednesday evening or Thursday morning, once the new specials are live in-store and in each retailer's app. Both Flybuys (Coles) and Everyday Rewards (Woolworths) typically sync their personalised bonus-points offers to the same weekly cycle, which is why comparing the printed catalogue against the app's own offers each Wednesday remains the most reliable way to catch the full range of that week's savings.
IGA, being a network of independently owned stores, does not follow an identical national cycle — individual stores can vary their own promotional timing, so shoppers relying on IGA specials should check their local store's current catalogue directly rather than assuming a fixed national schedule.