Instacart

Instacart's real trick isn't delivery speed, even though same-hour delivery across most major US and Canadian cities is genuinely fast — it's the per-unit price comparison that runs across more than 1,400 retailers, including Costco, Whole Foods, and Aldi, so you can see which store actually has the cheaper eggs without opening three separate apps. That comparison tool is the reason to use Instacart even when you're not in a hurry: it turns 'which store is cheapest today' from a guess into a quick check. Delivery convenience is table stakes at this point; knowing you're not overpaying is the part that's actually hard to get elsewhere.