MaddCards vs Cornerstone Cards
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MaddCards
Buy, sell, and trade sports cards and memorabilia. Connect with local collectors using integrated GPS maps to expand your collection. Download to begin your trading journey.
- Buy sports cards
- Sell sports cards
- Trade sports cards
- Connect with local collectors
- Integrated GPS maps
- Build sports card collection
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Now you can buy, sell & trade your sports cards & memorabilia with MaddCards. Connect with nearby sports cards enthusiasts via integrated GPS Maps and build your collection. Simply download MaddCards to get started.
Cornerstone Cards
This app helps trading card enthusiasts and sellers capture high-quality images of cards and their corners. It streamlines the process of showcasing card condition, enabling sellers to generate professional photos that build buyer trust.
- High-quality card image capture
- Focus on card corners
- Streamlines condition showcasing
- Professional photo generation
- Builds buyer trust
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Cornerstone is an app designed specifically for trading card enthusiasts and sellers. This app streamlines the process of showcasing the quality and condition of trading cards by focusing on capturing high-quality images of the card and its corners. The corners of a card are often the most scrutinized part when assessing its condition, and Cornerstone ensures that these critical details are highlighted with precision. By using Cornerstone, sellers can quickly and efficiently generate professional photos that accurately represent the state of their cards, making it easier to attract potential buyers and establish trust in the marketplace.
Screenshots
Verdict
MaddCards and Cornerstone Cards are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for MaddCards against 5.0 for Cornerstone Cards. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.
| Parameter | MaddCards | Cornerstone Cards |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 44 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobile App Fund | Andrew Hicks |
Customer experience
MaddCards
Cornerstone Cards
In-app purchases
MaddCards
No in-app purchases
Cornerstone Cards
No in-app purchases
Questions
Is MaddCards free?
Is Cornerstone Cards free?
Which has better reviews, MaddCards or Cornerstone Cards?
Do MaddCards or Cornerstone Cards have ads?
Which is updated more often, MaddCards or Cornerstone Cards?
Other comparisons
