
Solo dev + collector: I built a free scanner that prices One Piece cards from real sold sales — alt arts and parallels included. Break it for me?
I’m a solo developer and collector, and I built a free iOS app that scans a card and shows what it’s actually been selling for, from real sold sales. One Piece was a category I specifically wanted to get right, because alt art and parallel prices move fast and most price tools either skip them or make numbers up.
How it works: scan a card — raw or slabbed, up to 9 at once — and it IDs it and shows real recent sales. If it matches the wrong version, there’s a variant row under the card name to switch to the correct art or parallel in one tap. You can tap PSA grades to compare raw vs graded, track your collection like a portfolio with price charts and daily movers, and export the whole thing as a priced PDF binder sheet.
The rule I built it on: if a card doesn’t have enough sales history to compute an honest change, it shows a dash instead of inventing a percentage. Thin-sales alt arts get honesty, not vibes.
Free, no subscription, no scan caps. iOS only for now.
The ask: scan your alt arts, manga rares, parallels, whatever’s deep in the binder. When it’s wrong — it will be sometimes — comment the exact card and I’ll get the data fixed. Reports have been getting fixed same-day.
Link in comments.