# Centering50 vs Trovie

Centering50 and Trovie both sit at 4.7 stars, but that hides the real split: 92% of Trovie's written reviews are positive against 50% of Centering50's. Trovie also leads on in-app purchases (none vs 3) and ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for Centering50 against 4.8 for Trovie. Both are backed by a comparable volume of ratings — 54 and 20 respectively. Written reviews are what separate them: 50% of Centering50's written reviews are positive against 92% of Trovie's.

Centering50 ships an update every 8 days, Trovie weekly. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Centering50 | Trovie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (54 ratings)](https://appshunter.io/ios/app/centering50-card-grading-tool/id6759667301/reviews) | **[4.8 (20 ratings)](https://appshunter.io/ios/app/trovie/id6791005697/reviews)** |
| Number of ratings | **54** | 20 |
| Positive reviews | 50.0% of reviews | **91.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 155 MB | 95 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [FUK WAI LI](https://appshunter.io/developer/1880074668) | [Trovie, Inc.](https://appshunter.io/developer/6785720362) |

## What reviewers say

### Centering50

[App page](https://appshunter.io/ios/app/centering50-card-grading-tool/id6759667301)

This tool helps collectors accurately measure card centering for TCG and sports cards. It uses AI and precision tools to predict grades before submission, saving money on grading fees. Analyze both front and back for optimal results.

**Highlights:** Smart-Snap AI for fast scanning, Auto-Straighten Technology, Magenta Line Manual Mode, Grading Standard Library comparison, Front & Back Analysis, 15x Precision Zoom

**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 |


### Trovie

[App page](https://appshunter.io/ios/app/trovie/id6791005697)

This app streamlines inventory management and sales tracking for trading card game vendors. It automates cost basis calculations, tracks buys, sells, and trades, and provides event-specific financial summaries. Collectors can view live inventory via QR codes without needing an app.

**Highlights:** Automated cost basis calculation, Unified buy, sell, and trade entry, Barcode scanning for sealed products, Event-specific financial scoreboards, Multi-staff booth management, Live inventory viewing for collectors, Support for multiple TCGs

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

**In-app purchases:** none


## Frequently asked questions

### Is Centering50 free?

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

### Is Trovie free?

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

### Which has better reviews, Centering50 or Trovie?

Trovie is rated higher. Centering50 averages 4.7 out of 5 from 54 ratings, while Trovie averages 4.8 from 20 ratings.

### Do Centering50 or Trovie have ads?

Centering50 shows ads; Trovie does not.

### Which is updated more often, Centering50 or Trovie?

Centering50 ships an update every 8 days, and Trovie weekly. Most recently, Centering50 was updated on November 9, 2026 and Trovie on November 5, 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.*