TillBook: Grocery Price Book

Everyone standing in a supermarket in 2026 is playing a memory game they can't win: was this €3.49 last month or €2.99?
Is the "special offer" actually dearer than the everyday price in the other shop? Did this jar quietly shrink from 400g to 340g?

TillBook is the price book your grandmother kept, rebuilt for the squeeze: scan or tap an item, see *your* price history for it across *your* shops, get the honest unit price every time and catch shrinkflation the week it happens.

TillBook is your personal grocery price book. It remembers the prices you enter, across the shops you choose, so you can check what you paid before buying again.

Scan an item's barcode to recall it instantly, or add it by hand. Log the shelf or receipt price, pack size and shop. TillBook calculates the unit price for you and builds a clear history from your own entries.

Use TillBook to:

• See your latest logged price across your shops
• Compare prices using consistent €/kg, €/L or per-unit figures
• Review an item's personal price history
• Spot when a pack size has changed
• Flag the lowest price you have logged when there is real history to compare
• Update regular items quickly after a shop

Private by design:

• Your items, prices and shops stay on your device
• Barcode scanning happens on-device
• No account, advertising, analytics or tracking
• No online product database or retailer price feed
• Internet access is used only for Google Play