Bubble Inventory Management System
Products, stock movements, purchase orders, supplier management, and automated low-stock alerts — a complete inventory management SaaS built in Bubble for the SMB market that enterprise tools price out and spreadsheets can no longer handle.
Small Businesses Still Track Inventory in Spreadsheets
Enterprise inventory systems cost $500–$2,000 per month and take months to implement. Small retailers, warehouses, and product businesses need basic stock tracking, low-stock alerts, purchase orders, and supplier management without enterprise pricing. A Bubble-built inventory management system at $49–$149 per month occupies a massive underserved market and replaces the spreadsheet every growing product business eventually outgrows.
Inventory Management Data Model
Stock Movement and Low-Stock Alert Logic
Step 1: Create StockMovement record (audit trail)
type = Sale / Purchase / Adjustment / Return
quantity = input value (negative for outgoing)
Step 2: Update Product: stock_quantity = stock_quantity + quantity
Step 3: Only when: stock_quantity ≤ low_stock_threshold
AND no unresolved LowStockAlert exists for this Product
→ Create LowStockAlert record
→ Send email to workspace owner
→ Create in-app notification
// Receive purchase order workflow
Mark PO Received:
Step 1: For each POLineItem in this PurchaseOrder:
Create StockMovement: type=Purchase, qty=quantity_received
Update Product: stock_quantity = stock_quantity + quantity_received
Step 2: Update PurchaseOrder: status=Received, received_at=now
Step 3: Resolve any LowStockAlerts for received products
Never Modify Stock Directly — Always Use Movements
Every stock change, no matter how small, should create a StockMovement record before updating the Product quantity. This creates an auditable trail of every change, who made it, and why. Without this pattern, reconciling stock discrepancies is impossible and customers lose trust in the numbers the system shows them.
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Data model design, Stripe billing, multi-tenant architecture, and full SaaS builds — done right from day one by Pakistan’s leading Bubble.io team.
