# Card Grading Tool vs Card Centering Calculator Pro

The clearest difference is in-app purchases: Card Grading Tool at none against Card Centering Calculator Pro's 3. Card Grading Tool also leads on update cadence (every 2 months 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. Card Grading Tool asks for nothing beyond the download.

Card Grading Tool ships an update every 2 months, Card Centering Calculator Pro every 7 months. The most recent releases landed on October 4, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Card Grading Tool | Card Centering Calculator Pro |
| --- | --- | --- |
| 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 | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 108 MB | 53 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [Computing & Dreams BVBA](https://appshunter.io/developer/1016296633) | [Joseph Stein](https://appshunter.io/developer/535382667) |

## What reviewers say

### Card Grading Tool

[App page](https://appshunter.io/ios/app/card-grading-tool/id6739850958)

Analyze and measure the centering of your trading cards with precision tools. This app helps collectors determine grading potential and share results, supporting various card types.

**Highlights:** Accurate centering measurements, User-friendly interface, Customizable tools, Built-in ratio table, Save and share graded cards, Offline access

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Card Grading Tool free?

Card Grading Tool is free to download, with no in-app purchases.

### Is Card Centering Calculator Pro free?

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

### Do Card Grading Tool or Card Centering Calculator Pro have ads?

Card Grading Tool shows ads; Card Centering Calculator Pro does not.

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

Card Grading Tool ships an update every 2 months, and Card Centering Calculator Pro every 7 months. Most recently, Card Grading Tool was updated on October 4, 2026 and Card Centering Calculator Pro on November 2, 2026.

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