# Card Centering Calculator vs SlabDEX

The clearest difference is review sentiment: SlabDEX at 100% against Card Centering Calculator's 60%. SlabDEX also leads on ads (none vs shown) and rating (5.0 vs 4.7). Card Centering Calculator's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (2.5K vs 4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Card Centering Calculator sells 5 one-off in-app purchases and SlabDEX sells 5 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

SlabDEX holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Card Centering Calculator has 2.5K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 60% of Card Centering Calculator's written reviews are positive against 100% of SlabDEX's.

Card Centering Calculator ships an update monthly, SlabDEX weekly. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Card Centering Calculator | SlabDEX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.5K ratings)](https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/slabdex/id6760313636/reviews)** |
| Number of ratings | **2.5K** | 4 |
| Positive reviews | 60.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 21 MB | 94 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) | [SOMNIARE LLC](https://appshunter.io/developer/1883781471) |

## What reviewers say

### 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


### SlabDEX

[App page](https://appshunter.io/ios/app/slabdex/id6760313636)

Easily identify, price, and track your Pokémon card collection. Scan raw, graded, and sealed cards to view market data and compare prices. Organize your entire collection in one convenient dashboard.

**Highlights:** Scan raw, graded, and sealed cards, View recent sold listings and market values, Compare prices across different grades, Track personal collection and portfolio value, Organize cards, slabs, and sealed products, Access premium tools for advanced collectors

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SlabDEX Collector Monthly | $7.99 | per month |
| DEX Pro Monthly | $14.99 | per month |
| SlabDEX Collector Yearly | $49.99 | per year |
| DEX Pro Yearly | $119.99 | per year |
| SlabDEX 5 AI Grade Credits | $4.99 | one-time |


## Frequently asked questions

### Is Card Centering Calculator free?

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

### Is SlabDEX free?

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

### Which has better reviews, Card Centering Calculator or SlabDEX?

SlabDEX is rated higher. Card Centering Calculator averages 4.7 out of 5 from 2.5K ratings, while SlabDEX averages 5.0 from 4 ratings.

### Do Card Centering Calculator or SlabDEX have ads?

Card Centering Calculator shows ads; SlabDEX does not.

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

Card Centering Calculator ships an update monthly, and SlabDEX weekly. Most recently, Card Centering Calculator was updated on October 25, 2026 and SlabDEX on October 7, 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.*