
Self-initiated (in private development)
The Collector's Registry
Problem
Sports card collectors are served by tools that were never built for them. Price guides like Beckett and COMC are appraisers rather than registrars — they will value a card long before they can tell you whether you already own it. The nearest thing to a real catalogue, TCDB, asks collectors to enter a 500-card set by hand, one page load at a time, with no import path. And the cloud-based alternatives put a collection behind an account, a subscription, and a company that may not outlast it.
The problem compounds at the parallel. A single base card in 2026 Topps Series 1 carries forty-four or more parallels across retail and exclusive runs. This is the point at which spreadsheets resign.
Solution & Impact
Hantle is a fully-local collection manager — a private registry held in a single SQLite file on the collector’s own machine. No account, no sync service, no subscription.
The design work covered the product identity, the marketing site, and the interface language: a registry-and-ledger vocabulary (lots, exhibits, provenance, specimens) that frames a collection as an archive rather than a portfolio, paired with a dark surface and gold leaf palette that borrows from auction catalogues and certificate printing.
The core interface problem was the parallel ladder — showing which rungs of a forty-four-step chase a collector owns, with print runs colour-coded by scarcity, without the display collapsing into noise.
One card, forty-four ways
A single base card in 2026 Topps Series 1 carries forty-four parallels or more — twenty-three retail, twenty-one exclusive. Hantle records the whole run per checklist, colour-codes the print runs, and shows exactly which rungs are yours.
- Gold/2026Have
- Rainbow FoilopenHave
- Green Crackle/499Need
- Orange Lazer/25Need
- Red Foilboard/10Need
- Platinum1/1Need
The marketing site




The application












