# 質押計算機 vs CenterMint

The clearest difference is price: CenterMint at Free against 質押計算機's $1.99. CenterMint also leads on update cadence (every 3 days vs weekly). 質押計算機's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

CenterMint is free to download; 質押計算機 costs $1.99 up front. CenterMint sells 2 in-app purchases, starting at $4.99 per month. 質押計算機 asks for nothing beyond the download.

質押計算機 ships an update weekly, CenterMint every 3 days. Both last shipped on November 9, 2026.

## The numbers

| Metric | 質押計算機 | CenterMint |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/centermint-card-centering/id6760965068/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 67 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHUNG SHUE HSIAO](https://appshunter.io/developer/1855544052) | [JIAPENG Zhao](https://appshunter.io/developer/1877119025) |

## What reviewers say

### 質押計算機

[App page](https://appshunter.io/ios/app/id6755685807)

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

**In-app purchases:** none


### CenterMint

[App page](https://appshunter.io/ios/app/centermint-card-centering/id6760965068)

Analyze the centering of trading cards from a single photo to determine their grading potential. It calculates border ratios and provides insights into whether a card is worth submitting for professional grading, with options for detailed analysis and submission tracking.

**Highlights:** Automatic centering measurement, Border ratio calculation, Grading standards comparison, Worth Grading? profit calculator, Submission log, Corner and edge close-ups, Line-by-line manual adjustment

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly: Card Centering | $4.99 | per month |
| Pro Yearly: Card Grading Tools | $29.99 | per year |


## Frequently asked questions

### Is 質押計算機 free?

質押計算機 costs $1.99, with no in-app purchases.

### Is CenterMint free?

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

### Do 質押計算機 or CenterMint have ads?

CenterMint shows ads; 質押計算機 does not.

### Which is updated more often, 質押計算機 or CenterMint?

質押計算機 ships an update weekly, and CenterMint every 3 days. Most recently, 質押計算機 was updated on November 9, 2026 and CenterMint on November 9, 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.*