# Instant Card Grading vs Card Centering Calculator

The clearest difference is rating: Card Centering Calculator at 4.7 against Instant Card Grading's 3.5. Card Centering Calculator also leads on review sentiment (60% vs 29%) and ratings volume (2.6K vs 19). Instant Card Grading's advantage is iOS requirement (14.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Instant Card Grading sells 1 one-off in-app purchase and Card Centering Calculator sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Card Centering Calculator holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: Card Centering Calculator has 2.6K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 29% of Instant Card Grading's written reviews are positive against 60% of Card Centering Calculator's.

Instant Card Grading ships an update every 4 months, Card Centering Calculator monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Instant Card Grading | Card Centering Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (19 ratings)](https://appshunter.io/ios/app/instant-card-grading/id6469464438/reviews) | **[4.7 (2.6K ratings)](https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews)** |
| Number of ratings | 19 | **2.6K** |
| Positive reviews | 28.6% of reviews | **60.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 21 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [12 Triangles LLC](https://appshunter.io/developer/1249863049) | [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) |

## What reviewers say

### Instant Card Grading

[App page](https://appshunter.io/ios/app/instant-card-grading/id6469464438)

Analyze the centering of your trading cards instantly and accurately. This tool provides professional-quality pre-grading analysis to help you decide which cards to submit for official grading, saving you time and money.

**Highlights:** Instant centering analysis, Free pre-grading tool, Professional-grade accuracy, Works with all trading cards, Easy-to-use interface, Save and track cards

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Card Centering Calculator

[App page](https://appshunter.io/ios/app/card-centering-calculator/id6661022837)

This app helps collectors and traders measure card centering ratios for grading. It uses AI to detect centering or allows manual adjustments for precise measurements, displaying potential grades from major companies.

**Highlights:** AI-powered card centering detection, Manual centering measurement with zoom, Grade comparisons for PSA, BGS, SGC, CGC, TAG, ACE, Front and back side centering measurement, Grading standards reference guide, Off-center visualization tool

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Unlock Premium | $4.99 | one-time |
| Large Tip | $4.99 | one-time |
| Pristine Tip | $9.99 | one-time |

**What reviewers like**

- 👍 Intuitive and flexible
- 🚀 Provides great information on centering
- 💡 Helpful for graders and collectors
- 👍 Easy to use and user-friendly
- 👍 Accurate and works as a physical tool

**What reviewers complain about**

- 🐛 Centering measurement doesn't work properly
- 🔒 Grading information locked behind paywall
- 🐛 Camera quality issues, app resets during use

**Reported bugs**

- Centering measurement resets during use
- Image rotation doesn't stay in place

**Requested features**

- Thinner and dashed centering lines for better visibility
- Free access to grading information without subscription


## Frequently asked questions

### Is Instant Card Grading free?

Instant Card Grading is free to download, with in-app purchases available.

### Is Card Centering Calculator free?

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

### Which has better reviews, Instant Card Grading or Card Centering Calculator?

Card Centering Calculator is rated higher. Instant Card Grading averages 3.5 out of 5 from 19 ratings, while Card Centering Calculator averages 4.7 from 2.6K ratings.

### Do Instant Card Grading or Card Centering Calculator have ads?

Both Instant Card Grading and Card Centering Calculator show ads.

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

Instant Card Grading ships an update every 4 months, and Card Centering Calculator monthly. Most recently, Instant Card Grading was updated on November 3, 2026 and Card Centering Calculator on November 4, 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.*