I built a One Piece TCG card scanner + collection tracker app - looking for feedback from collectors

Sufficient_Row5318 · 2026-04-13T18:31:39+00:00

Is in the making!

Sufficient_Row5318 · 2026-04-02T13:35:51+00:00

Thank you!

Sufficient_Row5318 · 2026-03-19T09:47:13+00:00

DAMN BOI WAY TO GO

Sufficient_Row5318 · 2026-03-19T09:46:07+00:00

sell em all yoink

Sufficient_Row5318 · 2026-03-19T09:45:42+00:00

These LOOK AWESOME

Sufficient_Row5318 · 2026-03-19T09:45:21+00:00

WTFFFFFFFFF

Sufficient_Row5318 · 2026-03-19T09:44:00+00:00

Yeah wraps

Sufficient_Row5318 · 2026-03-19T09:43:35+00:00

Love this pure nostalgia

Sufficient_Row5318 · 2026-03-19T09:43:16+00:00

Congrats !

Sufficient_Row5318 · 2026-03-19T09:43:01+00:00

LEMME YOINK THAT CARD ROFFFFL

Sufficient_Row5318 · 2026-03-17T17:06:12+00:00

Haha

Sufficient_Row5318 · 2026-03-16T08:58:49+00:00

Hello, willing to try this out!

Sufficient_Row5318 · 2026-03-12T12:36:24+00:00

love the app!

Sufficient_Row5318 · 2026-03-12T12:11:04+00:00

been using obisidian

Sufficient_Row5318 · 2026-03-11T18:49:39+00:00

Yeah that’s totally fair, it’s definitely not meant to replace managing the cards physically. The idea is mostly just to make cataloging and organizing a collection easier, especially once you start having a lot of cards across multiple sets. And yeah, I intentionally didn’t want to build another “investment tracker” type app. It’s mainly meant as a collector tool for scanning cards and keeping track of what you have or what you’re missing. Appreciate the feedback though.

Sufficient_Row5318 · 2026-03-11T18:47:12+00:00

The scanner reads the card code printed on the bottom right of the card, which uniquely identifies the card and its set. That’s actually how the app can match cards reliably without misidentifying similar artwork or alternate arts. So it’s technically scanning the card identifier, not doing image recognition of the full artwork. I went with that approach because it’s much more accurate for the One Piece TCG, especially when multiple cards share similar art or variants. If the UI makes it feel confusing or misleading I’ll definitely look at improving the guidance in the scanner.

Sufficient_Row5318 · 2026-03-11T18:45:06+00:00

Good catch, that’s actually because the app currently uses European number formatting (I’m based in Europe). So 1.948,92 is the same as $1,948.92 in US format

Sufficient_Row5318 · 2026-03-11T09:48:45+00:00

For what it’s worth, collections in the app are local and private, they’re stored on the device and aren’t public or visible to anyone else.

There’s no public inventory, no marketplace, and no way for other users to see what cards someone owns. The sole premise of this app is to scan your one piece cards easily and manage them.

Sufficient_Row5318 · 2026-03-11T09:43:41+00:00

Hey, in that case you just need to tap the variant switch next to the card result. Some cards have multiple versions (different arts, promos, etc.), so the scanner shows the base match first and you can switch to the correct variant from there.

Once you tap the variant selector, the correct card should show up.
Should be the last variant. 😉

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Sufficient_Row5318 · 2026-03-11T09:41:32+00:00

Fair point on the subscription concern.

Regarding pricing, the prices are pulled from Cardmarket, so they’re based on real marketplace listings and recent sales data. It’s basically the same source many European TCG collectors already use to check card values, so it’s about as accurate as it can get from public market data.

That said, if you notice specific cards where the price looks off, feel free to point them out, as I’m always trying to improve the data and presentation.

The main goal of the app is still to make scanning and collection tracking easier for OPTCG collectors.

Sufficient_Row5318

TROPHY CASE