# Centering50 vs FR Queue Optimizer

The clearest difference is in-app purchases: FR Queue Optimizer at none against Centering50's 3. FR Queue Optimizer also leads on ads (none vs shown) and update cadence (every 4 days vs every 8 days). On price and iOS requirement there is nothing between them.

Both are free to download. Centering50 sells 3 in-app purchases, starting at $4.99 per month. FR Queue Optimizer asks for nothing beyond the download.

Centering50 ships an update every 8 days, FR Queue Optimizer every 4 days. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Centering50 | FR Queue Optimizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (28 ratings)](https://appshunter.io/ios/app/centering50-card-grading-tool/id6759667301/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 155 MB | 10 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [FUK WAI LI](https://appshunter.io/developer/1880074668) | [Francisco Montenegro](https://appshunter.io/developer/6787830196) |

## What reviewers say

### 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 |


### FR Queue Optimizer

[App page](https://appshunter.io/ios/app/fr-queue-optimizer/id6787830194)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Centering50 free?

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

### Is FR Queue Optimizer free?

FR Queue Optimizer is free to download, with no in-app purchases.

### Do Centering50 or FR Queue Optimizer have ads?

Centering50 shows ads; FR Queue Optimizer does not.

### Which is updated more often, Centering50 or FR Queue Optimizer?

Centering50 ships an update every 8 days, and FR Queue Optimizer every 4 days. Most recently, Centering50 was updated on October 6, 2026 and FR Queue Optimizer on October 10, 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.*