Observed arrival · 2026-11-13
Metade do dobro: a price-history checker
A Portuguese-language tool that tracks store prices and checks advertised discounts against prices it has previously observed.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Shoppers comparing Black Friday discounts
- Worth noticing
- It retains anomalous readings but excludes one-off extremes and certain all-nine prices from comparisons, and says its label is not an accusation of fraud.
Field notes
The page says it stores observed prices and product photos on its own server rather than loading the images from retailers. Its stated collection cadence increases through November, and it keeps anomalous readings while excluding some from comparisons. The extracted view shows filters and product-following controls, but no matching products under the active filters, so the available catalog cannot be judged from this evidence.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue