# Card Centering Calculator Pro vs 그린

The clearest difference is in-app purchases: 그린 at none against Card Centering Calculator Pro's 3. 그린 also leads on update cadence (fortnightly vs every 7 months). Card Centering Calculator Pro's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Card Centering Calculator Pro sells 3 in-app purchases, starting at $11.99 per year. 그린 asks for nothing beyond the download.

Card Centering Calculator Pro ships an update every 7 months, 그린 fortnightly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Card Centering Calculator Pro | 그린 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/card-centering-calculator-pro/id6760994831/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 53 MB | 122 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 9+ |
| Developer | [Joseph Stein](https://appshunter.io/developer/535382667) | [TaeHun Kwak](https://appshunter.io/developer/6774100648) |

## What reviewers say

### Card Centering Calculator Pro

[App page](https://appshunter.io/ios/app/card-centering-calculator-pro/id6760994831)

This tool helps collectors accurately measure the centering of trading cards and sports cards. It provides precise measurements and compares potential grades from major grading companies, aiding in informed decisions before professional submission.

**Highlights:** Camera and manual measurement tools, Precise centering ratio calculation, Grade comparisons across major companies, Front and back side grading, Built-in grading standards reference, Compatible with all card types

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly | $11.99 | per year |
| Yearly | $19.99 | per year |
| Lifetime | $29.99 | one-time |


### 그린

[App page](https://appshunter.io/ios/app/tcg/id6774100646)

Scan and manage your TCG cards, view estimated market prices based on domestic and international data, and connect with a trading community. Organize your collection and stay updated with notifications.

**Highlights:** Card scanning and information lookup, Estimated market price based on search data, Collection management and valuation, Trading community and listing, Price comparison with domestic/international listings, Notifications for app activity

**In-app purchases:** none


## Frequently asked questions

### Is Card Centering Calculator Pro free?

Card Centering Calculator Pro is free to download, with in-app purchases available.

### Is 그린 free?

그린 is free to download, with no in-app purchases.

### Do Card Centering Calculator Pro or 그린 have ads?

그린 shows ads; Card Centering Calculator Pro does not.

### Which is updated more often, Card Centering Calculator Pro or 그린?

Card Centering Calculator Pro ships an update every 7 months, and 그린 fortnightly. Most recently, Card Centering Calculator Pro was updated on November 2, 2026 and 그린 on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*