# PSB Watch vs ACE

The clearest difference is in-app purchases: PSB Watch at none against ACE's 1. ACE's advantage is update cadence (daily vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ACE sells 1 in-app purchase, starting at $4.99 per month. PSB Watch asks for nothing beyond the download.

PSB Watch ships an update every 6 months, ACE daily. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | PSB Watch | ACE |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Daily** |
| Monetization | — | Freemium |
| Size | 16 MB | 41 MB |
| Requires iOS | **14** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TRAPWIRE Inc](https://appshunter.io/developer/664378232) | [Terror LLC](https://appshunter.io/developer/1350269675) |

## What reviewers say

### PSB Watch

[App page](https://appshunter.io/ios/app/psb-watch/id1332084027)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is PSB Watch free?

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

### Is ACE free?

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

### Do PSB Watch or ACE have ads?

Neither PSB Watch nor ACE shows ads.

### Which is updated more often, PSB Watch or ACE?

PSB Watch ships an update every 6 months, and ACE daily. Most recently, PSB Watch was updated on October 13, 2026 and ACE on October 15, 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.*