# Card Grader Pro vs Centering50

Card Grader Pro and Centering50 both sit at 4.7 stars, but that hides the real split: 57% of Card Grader Pro's written reviews are positive against 0% of Centering50's. Card Grader Pro also leads on ads (none vs shown) and ratings volume (4.9K vs 42). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Card Grader Pro sells 9 in-app purchases, starting at $4.99 per month and Centering50 sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Card Grader Pro against 4.6 for Centering50. That said, the two scores are not equally well evidenced: Card Grader Pro has 4.9K ratings behind it against 42, so its average is the more settled of the two. Written reviews are what separate them: 57% of Card Grader Pro's written reviews are positive against 0% of Centering50's.

Card Grader Pro ships an update every 4 days, Centering50 every 8 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Card Grader Pro | Centering50 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.9K ratings)](https://appshunter.io/ios/app/card-grader-pro/id6743489803/reviews)** | [4.6 (42 ratings)](https://appshunter.io/ios/app/centering50-card-grading-tool/id6759667301/reviews) |
| Number of ratings | **4.9K** | 42 |
| Positive reviews | **57.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 8 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 148 MB | 155 MB |
| Requires iOS | **15.5** | 16.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Daniel Yaakob](https://appshunter.io/developer/1538646536) | [FUK WAI LI](https://appshunter.io/developer/1880074668) |

## What reviewers say

### Card Grader Pro

[App page](https://appshunter.io/ios/app/card-grader-pro/id6743489803)

Instantly assess the condition of your trading cards with AI-powered analysis of centering, edges, corners, and surface. For a more in-depth evaluation, choose expert human grading for detailed notes, rarity assessment, and submission guidance. Explore a community showcase of graded cards and view their market prices.

**Highlights:** AI-powered instant grading, Expert human grading, Condition notes and rarity assessment, View card prices, Community showcase

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro+ Monthly | $9.99 | per month |
| Pro Yearly | $49.99 | per year |
| Pro+ Yearly | $99.99 | per year |
| Human Grade | $1.49 | one-time |
| Fast Human Grade | $1.99 | one-time |
| Human Grade | $2.99 | one-time |
| Fast Human Grade | $3.49 | one-time |
| Fast Human Grade | $4.99 | one-time |

**What reviewers like**

- 👍 Good app for checking card grades
- 🚀 Fast and accurate ratings
- 💡 Useful for pre-grading cards before submission

**What reviewers complain about**

- 🐛 Inaccurate grading in free version
- 🐛 Doesn't work consistently

**Reported bugs**

- Grading information is the same for all cards
- Doesn't work half the time

**Requested features**

- Leveler when taking pictures
- More advanced grading capabilities


### Centering50

[App page](https://appshunter.io/ios/app/centering50-card-grading-tool/id6759667301)

This tool helps collectors accurately measure card centering ratios for TCG and sports cards. It uses AI-assisted scanning and manual guides to provide precise measurements, helping users predict grades and save on submission fees.

**Highlights:** AI-assisted border detection, Manual measurement guides, Front and back analysis, 15x precision zoom, Grading standard library, Dynamic contrast adjustment

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Monthly | $4.99 | per month |
| Unlimited Yearly | $24.99 | per year |
| Full Version Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is Card Grader Pro free?

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

### Is Centering50 free?

Centering50 is free to download, with in-app purchases available.

### Which has better reviews, Card Grader Pro or Centering50?

Card Grader Pro is rated higher. Card Grader Pro averages 4.7 out of 5 from 4.9K ratings, while Centering50 averages 4.6 from 42 ratings.

### Do Card Grader Pro or Centering50 have ads?

Centering50 shows ads; Card Grader Pro does not.

### Which is updated more often, Card Grader Pro or Centering50?

Card Grader Pro ships an update every 4 days, and Centering50 every 8 days. Most recently, Card Grader Pro was updated on October 25, 2026 and Centering50 on October 25, 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.*