Grand Line Ledger

mettchew

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About this app

Know when it is time to buy, sell or hold your trading cards.

Grand Line Ledger is a market intelligence app for TCG collectors. Every card gets a daily call: buy, sell or hold. It is not gut feel, it is data driven, and next to every call sits the success percentage from our full history of calls, so you can see exactly how often that call has been right before you trust it.

THE DAILY BOARD
Live prices and a fresh verdict on every card and sealed product, every day. Filter by set, price band, or call type and see exactly where the market is moving.

A TRACK RECORD NOBODY CAN EDIT
Every call we publish is stamped the day it fires and graded automatically 4 and 8 weeks later. Winners and losers stay on the board forever. Ask any other card app for their miss list.

YOUR COLLECTION, VALUED DAILY
Add your cards and see a year of value history instantly, because we already recorded it. Track profit and loss, and get flagged the day one of your cards earns a sell warning.

THE SCANNER
Point your camera at any card and get the match, the live price, and today's call. English and Japanese prints, foils included.

EVERY MARKET ON ONE PAGE
US, Japanese, and European prices side by side. Real eBay sold listings you can verify. PSA, CGC, and BGS graded populations.

MULTIPLE GAMES
One Piece is live end to end, with Pokemon, Lorcana, Dragon Ball, Digimon, Star Wars Unlimited and Gundam in the same engine and more games on the way.

Free to join. Prices, charts, and our full track record cost nothing. Premium unlocks the daily calls the moment they fire, plus unlimited collection tracking.

Observations, not financial advice.

What’s new

First public release. Live prices, daily buy/sell/hold calls, collection tracking, and the card scanner.