# Moonitor Notifications vs Card Centering Calculator

The clearest difference is review sentiment: Card Centering Calculator at 60% against Moonitor Notifications's 17%. Card Centering Calculator also leads on rating (4.7 vs 2.5) and update cadence (monthly vs every 5 months). Moonitor Notifications's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Card Centering Calculator sells 5 one-off in-app purchases. Moonitor Notifications asks for nothing beyond the download.

Card Centering Calculator holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Card Centering Calculator has 2.6K ratings behind it against 59, so its average is the more settled of the two. Written reviews point the same way: 17% of Moonitor Notifications's written reviews are positive against 60% of Card Centering Calculator's.

Moonitor Notifications ships an update every 5 months, Card Centering Calculator monthly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Moonitor Notifications | Card Centering Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (59 ratings)](https://appshunter.io/ios/app/moonitor-notifications/id1602951467/reviews) | **[4.7 (2.6K ratings)](https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews)** |
| Number of ratings | 59 | **2.6K** |
| Positive reviews | 16.7% of reviews | **60.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 26 MB | 21 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ziv Cohen](https://appshunter.io/developer/1602951469) | [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) |

## What reviewers say

### Moonitor Notifications

[App page](https://appshunter.io/ios/app/moonitor-notifications/id1602951467)

Receive important Discord notifications directly on your mobile device. This app bridges the gap between your Discord groups and your phone, ensuring you never miss critical updates. If your Discord group isn't yet supported, encourage your admins to reach out for integration.

**Highlights:** Discord notification transfer, Mobile alerts, Group notification support, Admin integration requests

**Features:** macOS Compatibility

**In-app purchases:** none


### Card Centering Calculator

[App page](https://appshunter.io/ios/app/card-centering-calculator/id6661022837)

This app helps collectors and traders measure card centering ratios for grading. It uses AI to detect centering or allows manual adjustments for precise measurements, displaying potential grades from major companies.

**Highlights:** AI-powered card centering detection, Manual centering measurement with zoom, Grade comparisons for PSA, BGS, SGC, CGC, TAG, ACE, Front and back side centering measurement, Grading standards reference guide, Off-center visualization tool

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Unlock Premium | $4.99 | one-time |
| Large Tip | $4.99 | one-time |
| Pristine Tip | $9.99 | one-time |

**What reviewers like**

- 👍 Intuitive and flexible
- 🚀 Provides great information on centering
- 💡 Helpful for graders and collectors
- 👍 Easy to use and user-friendly
- 👍 Accurate and works as a physical tool

**What reviewers complain about**

- 🐛 Centering measurement doesn't work properly
- 🔒 Grading information locked behind paywall
- 🐛 Camera quality issues, app resets during use

**Reported bugs**

- Centering measurement resets during use
- Image rotation doesn't stay in place

**Requested features**

- Thinner and dashed centering lines for better visibility
- Free access to grading information without subscription


## Frequently asked questions

### Is Moonitor Notifications free?

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

### Is Card Centering Calculator free?

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

### Which has better reviews, Moonitor Notifications or Card Centering Calculator?

Card Centering Calculator is rated higher. Moonitor Notifications averages 2.5 out of 5 from 59 ratings, while Card Centering Calculator averages 4.7 from 2.6K ratings.

### Do Moonitor Notifications or Card Centering Calculator have ads?

Card Centering Calculator shows ads; Moonitor Notifications does not.

### Which is updated more often, Moonitor Notifications or Card Centering Calculator?

Moonitor Notifications ships an update every 5 months, and Card Centering Calculator monthly. Most recently, Moonitor Notifications was updated on October 24, 2026 and Card Centering Calculator on October 30, 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.*