# ACE vs CenterMint

The clearest difference is ads: ACE at none against CenterMint's shown. ACE also leads on update cadence (daily vs every 2 weeks) and iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. ACE sells 1 in-app purchase, starting at $4.99 per month and CenterMint sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ACE ships an update daily, CenterMint every 2 weeks. The most recent releases landed on September 11, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | ACE | CenterMint |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ace-optcg-pregrading/id6758323301/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 41 MB | 48 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Terror LLC](https://appshunter.io/developer/1350269675) | [JIAPENG Zhao](https://appshunter.io/developer/1877119025) |

## What reviewers say

### ACE

[App page](https://appshunter.io/ios/app/ace-optcg-pregrading/id6758323301)

This app uses AI to analyze your One Piece Trading Card Game cards, providing detailed pre-grade estimates with subgrades for centering, corners, edges, and surface. It automatically identifies cards and compares them to reference images, offering a convenient way to assess your collection's condition.

**Highlights:** AI-powered card grading, Detailed grade reports with subgrades, Automatic card identification, Reference image comparison, Batch grading for multiple cards, Shareable grade reports, Scan history tracking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ace premium monthly | $4.99 | per month |


### CenterMint

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

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CenterMint Pro | $2.99 | per month |
| CenterMint Pro | $19.99 | per year |


## Frequently asked questions

### Is ACE free?

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

### Is CenterMint free?

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

### Do ACE or CenterMint have ads?

CenterMint shows ads; ACE does not.

### Which is updated more often, ACE or CenterMint?

ACE ships an update daily, and CenterMint every 2 weeks. Most recently, ACE was updated on September 11, 2026 and CenterMint on September 12, 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.*