Reliquary vs the TCGplayer app: a marketplace scanner beside a collection that knows its decks

Updated November 9, 2026

Choose the TCGplayer app to scan cards on your phone and see what they sell for on TCGplayer's marketplace. Choose Reliquary to know where every copy you own is and which decks claim it, and to let an assistant work with that. Reliquary does not scan cards and does not sell them.

At a glance

	Reliquary	TCGplayer app
What it is	Collection manager with an MCP server	Marketplace's phone app: card scanner, prices, collection
Where it runs	Web, and any assistant that speaks MCP	iOS and Android
Free	The whole collection, 5 decks, trading	Free to download and use
Paid	Plus: every deck, $3.99 a month or $29 a year	None listed; no in-app purchases
Export	Moxfield or Deckbox CSV, decklists, the account as JSON	Card lists as plain text or CSV
API	MCP server and REST API, signed in with OAuth	TCGplayer API: no new access granted

Each fact is from the sources below, read on the day given. A dash: no source says.

Where they differ

The difference is allocation. In Reliquary every copy you own is in exactly one place: a binder, a box or a deck. A deck claims copies from what you own, and two decks never count the same copy without saying so: a shared copy is named with every deck that claims it and where it really is. A proxy is named as one wherever it shows, and left out of a value unless you ask. Card allocation across decks has the rules.

The TCGplayer app is a marketplace's own app, built around its scanner and the marketplace's prices. Reliquary prices your cards from Scryfall's data, by each copy's printing and finish, in USD, EUR or CHF. It also has an MCP server and a REST API, so an assistant such as Claude or ChatGPT reads and changes your collection under the same rules. What each costs, exports and offers as an API is in the table above.

Moving from the TCGplayer app

Reliquary recognises the TCGplayer app's collection CSV by its Simple Name, Set Code and Printing columns, and reads each card's name, set, number, finish, condition and language. It does not read TCGplayer's product IDs, so the old app's data backup, which names cards only by product ID, cannot be imported as it is.

What players complain about

From low-star App Store reviews, a Reddit thread and TCGplayer's help, read on 9 November 2026:

The scanner often fails to read a card, or picks the wrong set, finish or edition, so scans are fixed one by one. App Store reviews, read 9 November 2026.
Prices shown do not always match the card: one review says they no longer change with the condition picked. App Store reviews, read 9 November 2026.
Some players lost their collection after an update, and one lost a buy list built while signed out. App Store reviews, read 9 November 2026.
After the 2025 update, the backup of the old app's data (legacy_data.csv) names cards only by TCGplayer product ID, so deckbuilding sites cannot read it without converting it first. An r/EDH thread, read 9 November 2026; TCGplayer's migration article describes that backup, read 9 November 2026.

Questions

Can I keep scanning in the TCGplayer app?

Yes, if its CSV carries the card names: Reliquary reads a file with the Simple Name, Set Code and Printing columns. A scanner app's CSV, such as ManaBox's, imports the same way.

Does Reliquary scan cards?

No. Cards come in from a CSV file, a pasted decklist, or a search by name, in any language Scryfall prints.

Can I sell cards through Reliquary?

No. Reliquary is no marketplace. It matches trades with other players from the wantlists and tradelists they publish, and prices cards so a trade's gap is clear.

Create a free accountFree, with Google or GitHub. No card.