ShrinkWatch EU
See the real price per kg and catch shrinking grocery packs
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Free, open-source browser extension that shows the price per kg, litre or piece on grocery web shops and warns when a pack gets smaller for the same price. Works on Lidl, Carrefour, Albert Heijn, Mercadona, ICA and more. No account, no tracking.
PH · launched Nov 3, 2026 · 1 upvote (top 64%) · 0 views
Niche: comparison engines and tools · 248 launches, 28 in the last 7 days ▼ -20% · Explore this niche →
Category and tags
- Retail & commerce
- Analytics & BI
- B2C
- Not AI
- Commercial product
- Browser Extensions
- Privacy
- GitHub
- Shopping
Visit website ↗ Source listing ↗
Could you build this?
Partial The extension UI and unit-price math are easy, but reliable price and pack-size extraction across many grocery chains and countries requires per-retailer scrapers that break constantly.
What it would actually take: Build a browser extension (Manifest V3) that parses product pages and normalizes unit prices, with a historical database to detect pack shrinkage. The hard part is maintaining per-retailer parsers across many countries and languages, which needs ongoing engineering effort and a data-collection strategy that respects each site's terms.
Competitors
Other products that read as similar to this one : 209 launches clear the similarity bar, closest 8 shown.
Attention rank: #68 of 210 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 325 days after the earliest competitor.
- Tikit · ph · 2026-10-31 · 1 upvotes · similarity 0.53
- Supermarket Offers in Denmark · ph · 2026-11-07 · 1 upvotes · similarity 0.47
- Coffee Prices · ph · 2026-10-31 · 1 upvotes · similarity 0.47
- DiaperPrice · ph · 2026-10-01 · 1 upvotes · similarity 0.46
- A website that tracks US food prices every day · hn · 2026-09-21 · 29 upvotes · similarity 0.44
- Grocery Mentor · ph · 2026-09-10 · 2 upvotes · similarity 0.44
- food-price-monitor · github · 2026-09-19 · 16 upvotes · similarity 0.43
- PoundsCalculator · ph · 2026-09-12 · 1 upvotes · similarity 0.43
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