QuickCart — Grocery Delivery Mobile App
A grocery delivery mobile app with real-time inventory sync from partner stores, smart substitution logic when items are out of stock, live delivery tracking, and a repeat-order engine that rebuilds a customer's usual basket in one tap.
The Challenge
QuickCart needed to solve the two biggest failure modes of grocery delivery apps: out-of-stock frustration (30% of orders had at least one unavailable item) and repeat-order friction (loyal customers were rebuilding their weekly basket from scratch every time).
Our Solution
We built real-time inventory sync from partner store POS systems (updated every 60 seconds), a smart substitution engine that suggests replacements based on brand, size, and price similarity, live GPS delivery tracking with driver photos, and a repeat-order engine that offers one-tap reorder of any past basket — with automatic adjustments if items are unavailable.
Results & Impact
Technology Stack
Frequently Asked Questions
How does QuickCart handle out-of-stock items?
QuickCart's substitution engine matches unavailable items against alternatives ranked by brand affinity, size similarity, and price parity. Customers preview and approve substitutions before checkout, or opt into auto-substitute at order time. This reduced out-of-stock complaints by 71% compared to the previous 'refund only' flow.
Does QuickCart support real-time delivery tracking?
Yes. QuickCart shows live driver GPS position on a map from pickup through delivery, with photo verification on drop-off and a WebSocket-powered ETA that recalculates as traffic conditions change.
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