---
title: "How does the local swap comparison matcher help complete the album?"
type: FAQ
category: "companion-app"
slug: "swap-comparison-matcher-logic"
id: 3
facility_tags: ["trade-matching","companion-tool"]
service_tags: ["clipboard-sync","data-export"]
---

# How does the local swap comparison matcher help complete the album?

The companion widget includes a client-side comparison engine that operates with zero database costs. Collectors paste their trading partner's raw missing sticker codes list (e.g.

## Detailed Deep Dive
The companion widget includes a client-side comparison engine that operates with zero database costs. Collectors paste their trading partner's raw missing sticker codes list (e.g. 'ARG-10, MEX-3, RSA-6') directly into the matcher input. The widget parses these values, intersects them against the user's duplicates, and returns a matching trades ledger in under 150ms. Trades are displayed as highlight tags indicating standard-to-standard or golden-to-golden match possibilities, maximizing collection velocity.

### Metadata Tags
- **Category**: companion-app
- **Required Tags**: trade-matching, companion-tool
- **Context Tags**: clipboard-sync, data-export