About this app
GrailSweep is an AI-powered trading card scanner and collection manager for Pokémon, Magic: The Gathering, Yu-Gi-Oh!, and One Piece Card Game. INSTANT CARD SCANNING Point your camera at any card and GrailSweep identifies it in seconds using advanced visual AI — no manual searching required. Includes support for Japanese Pokémon cards. LIVE MARKET PRICES Get real-time buy and sell prices from the major TCG marketplaces so you always know what your cards are worth. Prices updated daily across all supported games including One Piece Card Game. CONDITION GRADING GrailSweep analyses your card's condition and provides a free instant grade to help you value it accurately. AI deep grading on pro version. COLLECTION MANAGEMENT Build and track your entire collection. See your portfolio value update in real time as market prices change. SET COMPLETION Instantly know what cards you have and which you're missing, so you can master your sets more easily. Includes all rare and special cards across every set. OFFLINE MODE Going to a show or event? Download sets in advance and check accurate pricing without an internet connection — so you always buy at the right price. SUPPORTS MULTIPLE GAMES Full support for Pokémon (English and Japanese), Magic: The Gathering, Yu-Gi-Oh!, and One Piece Card Game — with a database of over 167,000 cards across all four games. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Latest release
What’s New
Added support for One Piece Card Game — scan, identify and value over 4,600 One Piece cards across all sets. Live market prices updated daily. Total card database now exceeds 167,000 cards across Pokémon, Magic: The Gathering, Yu-Gi-Oh!, and One Piece Card Game.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 27, 2026 · 12:55 PM Free