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Track Product Price History

As a Host, I want to track price changes for products over time, So that I can make informed purchasing decisions and identify the best prices.

Acceptance Criteria

Section titled “Acceptance Criteria”
  • Given I have purchased a product
  • When I record the purchase price
  • Then the system stores the price with:
    • Date and time of purchase
    • Vendor/store where purchased
    • Purchase context (manual entry, from shopping list, imported)
    • Optional notes about the purchase
  • And I can view price history on the product detail screen
  • And I can see price trends with indicators:
    • Up trend (price increased) with percentage change
    • Down trend (price decreased) with percentage change
    • Stable trend (no significant change)
  • And I can see price statistics:
    • Minimum price ever paid
    • Average price across all purchases
    • Maximum price ever paid
  • And I can see a timeline of all price changes:
    • Chronological list of all purchases
    • Date and vendor for each entry
    • Price difference from previous purchase
    • “Latest” indicator on most recent entry
  • And the price history is displayed in a clear, easy-to-read format

Implementation Status

Section titled “Implementation Status”

✅ IMPLEMENTED (December 2025)

Implementation Details

Section titled “Implementation Details”

Files Created:

  • shaker/components/PriceHistoryChart.tsx - Price visualization component

Files Modified:

  • shaker/types/product.ts - Added PriceHistoryEntry type
  • shaker/data/products/index.ts - Added mock price history data
  • shaker/app/(tabs)/inventory/products/[id].tsx - Added price history display

Features:

  • Price trend indicators (up/down/stable) with color coding
  • Price statistics (min, avg, max) in grid layout
  • Price timeline with vendor and date information
  • Automatic trend calculation based on price changes
  • Integration into product detail screen

See: Price History Implementation for complete details.

Priority

Section titled “Priority”

Medium - Helps with budgeting and purchasing decisions

Section titled “Related Entities”
  • Product, PriceHistoryEntry

Future Enhancements

Section titled “Future Enhancements”
  • Price alerts when price drops below threshold
  • Best price finder (highlight lowest historical price)
  • Price prediction based on trends
  • Export price history as CSV
  • Price comparison across similar products
  • Vendor analytics (which stores have best prices)
  • Seasonal trend identification
  • Automatic price tracking from shopping list