# SpotOn Grading System Comic Ed vs MintySlab® | Card Centering

The clearest difference is review sentiment: MintySlab® | Card Centering at 83% against SpotOn Grading System Comic Ed's 13%. MintySlab® | Card Centering also leads on rating (4.6 vs 3.3) and update cadence (weekly vs every 5 months). SpotOn Grading System Comic Ed's advantage is ads (none vs shown) and iOS requirement (12.4 vs 17.0). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. SpotOn Grading System Comic Ed sells 1 in-app purchase, starting at $14.99 per year and MintySlab® | Card Centering sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

MintySlab® | Card Centering holds the better App Store score, 4.6 against 3.3. Both are backed by a comparable volume of ratings — 24 and 9 respectively. Written reviews point the same way: 13% of SpotOn Grading System Comic Ed's written reviews are positive against 83% of MintySlab® | Card Centering's.

SpotOn Grading System Comic Ed ships an update every 5 months, MintySlab® | Card Centering weekly. The most recent releases landed on June 9, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | SpotOn Grading System Comic Ed | MintySlab® | Card Centering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (24 ratings)](https://appshunter.io/ios/app/spoton-grading-system-comic-ed/id1288463477/reviews) | **[4.6 (9 ratings)](https://appshunter.io/ios/app/mintyslab-card-centering/id6605924591/reviews)** |
| Number of ratings | **24** | 9 |
| Positive reviews | 12.5% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 92 MB | 46 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fenix Flame Comics, LLC](https://appshunter.io/developer/1288463476) | [Peryer Technologies LLC](https://appshunter.io/developer/1760990425) |

## What reviewers say

### SpotOn Grading System Comic Ed

[App page](https://appshunter.io/ios/app/spoton-grading-system-comic-ed/id1288463477)

Quickly grade comic books on the spot with a series of multiple-choice questions. Get grades comparable to professional services and track your past assessments. Offers a YouTube tutorial for guidance.

**Highlights:** On-the-spot comic book grading, Multiple-choice question format, Comparable to third-party grading, Track past graded books, Identify Qualified or Restored labels, Video tutorial available

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited grading for 1 year | $14.99 | per year |


### MintySlab® | Card Centering

[App page](https://appshunter.io/ios/app/mintyslab-card-centering/id6605924591)

This app uses advanced computer vision to analyze the centering of sports and TCG trading cards. Get instant, accurate centering results to inform grading decisions and prepare cards for submission.

**Highlights:** Precision card centering analysis, Instant centering breakdown, Grade preparation confidence, Scan from camera roll, Scan from online listings, Evaluate before purchase

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MintySlab+ (Monthly) | $4.99 | per month |
| MintySlab+ (Annual) | $29.99 | per year |


## Frequently asked questions

### Is SpotOn Grading System Comic Ed free?

SpotOn Grading System Comic Ed is free to download, with in-app purchases available.

### Is MintySlab® | Card Centering free?

MintySlab® | Card Centering is free to download, with in-app purchases available.

### Which has better reviews, SpotOn Grading System Comic Ed or MintySlab® | Card Centering?

MintySlab® | Card Centering is rated higher. SpotOn Grading System Comic Ed averages 3.3 out of 5 from 24 ratings, while MintySlab® | Card Centering averages 4.6 from 9 ratings.

### Do SpotOn Grading System Comic Ed or MintySlab® | Card Centering have ads?

MintySlab® | Card Centering shows ads; SpotOn Grading System Comic Ed does not.

### Which is updated more often, SpotOn Grading System Comic Ed or MintySlab® | Card Centering?

SpotOn Grading System Comic Ed ships an update every 5 months, and MintySlab® | Card Centering weekly. Most recently, SpotOn Grading System Comic Ed was updated on June 9, 2026 and MintySlab® | Card Centering on July 6, 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.*