# Centered Cardboard vs DropNotify

The clearest difference is review sentiment: Centered Cardboard at 100% against DropNotify's 50%. Centered Cardboard also leads on rating (4.9 vs 4.2). DropNotify's advantage is update cadence (weekly vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Centered Cardboard sells 1 one-off in-app purchase 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.

Centered Cardboard holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 28 and 12 respectively. Written reviews point the same way: 100% of Centered Cardboard's written reviews are positive against 50% of DropNotify's.

Centered Cardboard ships an update monthly, DropNotify weekly. The most recent releases landed on September 15, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Centered Cardboard | DropNotify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (28 ratings)](https://appshunter.io/ios/app/centered-cardboard/id6759780836/reviews)** | [4.2 (12 ratings)](https://appshunter.io/ios/app/dropnotify/id6762160323/reviews) |
| Number of ratings | **28** | 12 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 7 MB | 8 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oak Labs Limited Liability Company](https://appshunter.io/developer/1880606503) | [Brendan Forti](https://appshunter.io/developer/1893174499) |

## 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 |


### 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 Centered Cardboard free?

Centered Cardboard 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, Centered Cardboard or DropNotify?

Centered Cardboard is rated higher. Centered Cardboard averages 4.9 out of 5 from 28 ratings, while DropNotify averages 4.2 from 12 ratings.

### Do Centered Cardboard or DropNotify have ads?

Neither Centered Cardboard nor DropNotify shows ads.

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

Centered Cardboard ships an update monthly, and DropNotify weekly. Most recently, Centered Cardboard was updated on September 15, 2026 and DropNotify on September 23, 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.*