# Centering Check vs DropNotify

Centering Check and DropNotify both sit at 4.7 stars, but that hides the real split: 73% of DropNotify's written reviews are positive against 0% of Centering Check's. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Centering Check sells 3 in-app purchases, starting at $3.99 per month and DropNotify sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Centering Check holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 56 and 20 respectively. Written reviews complicate that: 0% of Centering Check's written reviews are positive against 73% of DropNotify's, so the app with the better star average is not the one people write more warmly about.

Centering Check ships an update every 2 weeks, DropNotify every 10 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Centering Check | DropNotify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (56 ratings)](https://appshunter.io/ios/app/centering-check-tcg-card-tool/id6760215858/reviews)** | [4.5 (20 ratings)](https://appshunter.io/ios/app/dropnotify/id6762160323/reviews) |
| Number of ratings | **56** | 20 |
| Positive reviews | 0.0% of reviews | **72.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 47 MB | 8 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Giosue Castellano](https://appshunter.io/developer/1883290378) | [Brendan Forti](https://appshunter.io/developer/1893174499) |

## What reviewers say

### Centering Check

[App page](https://appshunter.io/ios/app/centering-check-tcg-card-tool/id6760215858)

This tool uses AI to accurately measure the centering of trading cards from photos or screenshots. It provides instant grade estimates for major grading companies and allows for manual adjustments and sharing of results. Evaluate online listings and your own collection with confidence.

**Highlights:** AI-powered image correction for accurate centering, Instant grade estimates for PSA, BGS, CGC, TAG, Manual border adjustment for precise measurements, Editable history of all scanned cards, Front and back centering calculations, Shareable images with centering data, Grading standards reference guide

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Centering Check PRO | $3.99 | per month |
| Yearly Centering Check PRO | $39.99 | per year |
| Lifetime Subscription PRO | $99.99 | one-time |


### DropNotify

[App page](https://appshunter.io/ios/app/dropnotify/id6762160323)

Get instant notifications when popular retailers restock desired items. Track product availability online and in-store for collectibles, deals, and more. Offers both free and premium subscription tiers for enhanced features.

**Highlights:** Real-time push notifications, Online and in-store restock tracking, Support for major retailers, Track collectibles and deals, Free and premium subscription options, Local restock maps

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DropNotify Premium | $9.99 | per month |


## Frequently asked questions

### Is Centering Check free?

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

### Is DropNotify free?

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

### Which has better reviews, Centering Check or DropNotify?

Centering Check is rated higher. Centering Check averages 4.7 out of 5 from 56 ratings, while DropNotify averages 4.5 from 20 ratings.

### Do Centering Check or DropNotify have ads?

Neither Centering Check nor DropNotify shows ads.

### Which is updated more often, Centering Check or DropNotify?

Centering Check ships an update every 2 weeks, and DropNotify every 10 days. Most recently, Centering Check was updated on October 31, 2026 and DropNotify on October 24, 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.*