# Corner the Market — Trading Card Portfolio Tracker

> Trading card portfolio tracker with real-time market value analysis. (iPhone/iPad app by Alan Niebuhr.)

- Source: https://appshunter.io/ios/app/corner-the-market/id6771091369 (this page in markdown: same URL + `.md`)
- Developer: [Alan Niebuhr](https://appshunter.io/developer/1888019321)
- Category: Sports, Reference
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 32 MB
- Languages: American English
- Released: 2026-05-26
- Data updated: 2026-07-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/corner-the-market/id6771091369/reviews.md

## What is Corner the Market?

Corner the Market is the all-in-one portfolio tracker for serious trading card collectors. Whether you collect baseball, basketball, Pokémon, or Magic — track what you own, monitor real eBay prices, and make smarter buy, sell, grade, and trade decisions.

MY COLLECTION
Add cards with full details: player, year, brand, card number, parallel, condition, purchase price, and date. Mark cards sold when you flip them. Active and sold cards stay separate, searchable, and sortable.

REAL-TIME EBAY PRICES
Look up any card's current market value using live eBay data. See the full price spread with a chart showing Q1, median, Q3, and individual sale prices — not just the cheapest listing.

WATCHLIST
Track cards you want to buy. Set a target price and see when market prices drop into your range. Monitor live eBay listings without leaving the app.

TOOLS THAT DO THE MATH
· Sale Calculator — real profit after eBay fees, shipping, and cost basis
· Should I Grade This? — compare raw vs. PSA 9 vs. PSA 10 eBay prices before you submit
· Trade Analyzer — see the real market value on both sides of any trade
· Backup & Restore — export and restore your full collection anytime

PORTFOLIO ANALYTICS
Value, total invested, win rate, unrealized and realized gains, ROI by year, brand, and condition, top performers, and a portfolio timeline chart.

SUPPORTS ALL MAJOR CARD TYPES
Baseball · Football · Basketball · Hockey · Soccer · Pokémon · Magic: The Gathering · Yu-Gi-Oh! · and more

## Key features

- Add cards with full details
- Monitor real-time eBay prices
- Watchlist for desired cards
- Sale calculator with fees
- Grading comparison tool
- Portfolio analytics and charts


## Frequently asked questions about Corner the Market

### What types of trading cards can I track with Corner the Market?

Corner the Market supports a wide range of trading cards, including Baseball, Football, Basketball, Hockey, Soccer, Pokémon, Magic: The Gathering, Yu-Gi-Oh!, and more. You can add cards with full details like player, year, brand, and condition.

### How does Corner the Market track card values?

The app uses live eBay data to provide real-time market values for your cards. It displays a price spread with charts showing Q1, median, Q3, and individual sale prices, offering a comprehensive view beyond just the cheapest listing.

### Can Corner the Market help me calculate profits?

Yes, Corner the Market includes a Sale Calculator that computes your real profit after accounting for eBay fees, shipping costs, and your original cost basis. This helps you make informed selling decisions.

### Does Corner the Market offer a watchlist feature?

Yes, you can create a watchlist to track cards you're interested in buying. You can set a target price and receive notifications when market prices drop into your desired range, all without leaving the app.

### Is Corner the Market available on all devices?

Currently, Corner the Market is supported on iPhone and iPod devices. Information regarding Android or other platform availability is not provided.

### How often is Corner the Market updated?

The app was last updated on May 26, 2026, with version 1.0.1. This indicates recent development activity, suggesting ongoing support and potential future updates.

### What are the portfolio analytics provided by Corner the Market?

Corner the Market offers detailed portfolio analytics, including total value, invested amount, win rate, realized and unrealized gains, ROI broken down by year, brand, and condition, top-performing cards, and a portfolio timeline chart.

### Does Corner the Market have ads?

No, Corner the Market does not contain advertisements. The app is completely free to use without any ad interruptions.

## Version history (last 1 release)

### 1.0.1 — 2026-05-26

No release notes.

## More apps by Alan Niebuhr

- [Playing Card Score Keeper ASC](https://appshunter.io/ios/app/playing-card-score-keeper-asc/id6761148626)

All apps by Alan Niebuhr: https://appshunter.io/developer/1888019321

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-06.*