# Card Centering Calculator vs keepbin

The clearest difference is review sentiment: keepbin at 100% against Card Centering Calculator's 60%. keepbin also leads on in-app purchases (none vs 5) and ads (none vs shown). Card Centering Calculator's advantage is ratings volume (2.5K vs 2). On price and device support there is nothing between them.

Both are free to download. Card Centering Calculator sells 5 one-off in-app purchases. keepbin asks for nothing beyond the download.

keepbin 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 2, 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 keepbin's.

Card Centering Calculator ships an update monthly, keepbin every 2 weeks. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Card Centering Calculator | keepbin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.5K ratings)](https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/keepbin/id6803345853/reviews)** |
| Number of ratings | **2.5K** | 2 |
| Positive reviews | 60.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 21 MB | 40 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) | [Juan Martin](https://appshunter.io/developer/6801689064) |

## 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


### keepbin

[App page](https://appshunter.io/ios/app/keepbin/id6803345853)

This app helps you declutter your photo library by presenting one image at a time for you to keep or delete. It prioritizes videos for maximum space recovery and ensures your photos never leave your device. All deletions are final only after your explicit confirmation.

**Highlights:** Random photo presentation, Swipe to keep or delete, Bin for recoverable deletions, Prioritizes video deletion, Offline functionality, No cloud upload, One-time deletion confirmation

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

**In-app purchases:** none


## Frequently asked questions

### Is Card Centering Calculator free?

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

### Is keepbin free?

keepbin is free to download, with no in-app purchases.

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

keepbin is rated higher. Card Centering Calculator averages 4.7 out of 5 from 2.5K ratings, while keepbin averages 5.0 from 2 ratings.

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

Card Centering Calculator shows ads; keepbin does not.

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

Card Centering Calculator ships an update monthly, and keepbin every 2 weeks. Most recently, Card Centering Calculator was updated on October 17, 2026 and keepbin on October 3, 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.*