# Centered Cardboard vs Trovie

The clearest difference is in-app purchases: Trovie at none against Centered Cardboard's 1. Trovie also leads on update cadence (weekly vs every 3 weeks). Centered Cardboard's advantage is review sentiment (100% vs 92%) and ratings volume (63 vs 20). On price, rating, ads and device support there is nothing between them.

Both are free to download. Centered Cardboard sells 1 one-off in-app purchase. Trovie asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Centered Cardboard against 4.8 for Trovie. Both are backed by a comparable volume of ratings — 63 and 20 respectively. Written reviews are what separate them: 100% of Centered Cardboard's written reviews are positive against 92% of Trovie's.

Centered Cardboard ships an update every 3 weeks, Trovie weekly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Centered Cardboard | Trovie |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (63 ratings)](https://appshunter.io/ios/app/centered-cardboard/id6759780836/reviews) | **[4.8 (20 ratings)](https://appshunter.io/ios/app/trovie/id6791005697/reviews)** |
| Number of ratings | **63** | 20 |
| Positive reviews | **100.0% of reviews** | 91.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 18 MB | 95 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oak Labs Limited Liability Company](https://appshunter.io/developer/1880606503) | [Trovie, Inc.](https://appshunter.io/developer/6785720362) |

## What reviewers say

### Centered Cardboard

[App page](https://appshunter.io/ios/app/centered-cardboard/id6759780836)

This app helps trading card collectors pre-grade their cards by analyzing centering and alignment. It uses your device's camera and visual tools to provide quick, consistent, and accurate feedback on card position and border spacing.

**Highlights:** Live centering feedback with color-coded indicators, Skewed measuring for rotated borders, Exact distances for border spacing, Gyro leveling crosshair, Outline guide overlays, Up to 100x zoom, Camera capture or photo import

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Centered Cardboard Pro | $4.99 | 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 Centered Cardboard free?

Centered Cardboard 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, Centered Cardboard or Trovie?

Trovie is rated higher. Centered Cardboard averages 4.8 out of 5 from 63 ratings, while Trovie averages 4.8 from 20 ratings.

### Do Centered Cardboard or Trovie have ads?

Neither Centered Cardboard nor Trovie shows ads.

### Which is updated more often, Centered Cardboard or Trovie?

Centered Cardboard ships an update every 3 weeks, and Trovie weekly. Most recently, Centered Cardboard was updated on November 5, 2026 and Trovie on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*