# MasterDex vs Card Centering Calculator

MasterDex and Card Centering Calculator both sit at 4.8 stars, but that hides the real split: 87% of MasterDex's written reviews are positive against 60% of Card Centering Calculator's. MasterDex also leads on iOS requirement (16.6 vs 18.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. MasterDex sells 2 one-off in-app purchases and Card Centering Calculator sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for MasterDex against 4.7 for Card Centering Calculator. Both are backed by a comparable volume of ratings — 1.7K and 2.5K respectively. Written reviews are what separate them: 87% of MasterDex's written reviews are positive against 60% of Card Centering Calculator's.

MasterDex ships an update every 3 weeks, Card Centering Calculator monthly. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | MasterDex | Card Centering Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.7K ratings)](https://appshunter.io/ios/app/masterdex-complete-guide/id1621464261/reviews)** | [4.7 (2.5K ratings)](https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews) |
| Number of ratings | 1.7K | **2.5K** |
| Positive reviews | **86.6% of reviews** | 60.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 196 MB | 21 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lorenzo Greco](https://appshunter.io/developer/480768196) | [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) |

## What reviewers say

### MasterDex

[App page](https://appshunter.io/ios/app/masterdex-complete-guide/id1621464261)

This app serves as a comprehensive guide for fans and trainers, offering detailed information on creatures, team building, and the trading card game. It features offline access, advanced search, and tracking for favorite creatures and shinies, updated for the latest generation.

**Highlights:** Updated creature information, Team builder tool, Trading Card Game details, Offline functionality, Shiny creature tracker, Advanced search filters

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Masteredex - Sale | $1.99 | one-time |
| Masterdex PRO | $2.99 | one-time |

**What reviewers like**

- 🚀 Fantastic app
- 👍 Great Pokédex
- 🔒 No ads
- 💡 One-time purchase
- 👍 Aesthetically pleasing

**What reviewers complain about**

- 🐛 Crashing and slow loading
- 🐛 Bugs with team builder
- 🐛 Missing Pokémon forms and gender differences
- 🐛 Incorrect or outdated information
- 💡 Lack of Pokémon location filters

**Reported bugs**

- Shiny toggle not working in team builder
- Pokémon 3D models and artwork not displaying
- Johto region locations missing
- Crashes when adding Pokémon to teams
- Incorrect information for some Pokémon (e.g., Necrozma's ability, Pikachu's classification)

**Requested features**

- Add Pokémon location filters
- Implement ability to mark Pokémon as caught/seen
- Add damage calculator
- Allow reorganizing of teams
- Include Pokémon cries and Dynamax/Gigantamax forms


### 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 MasterDex free?

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

### Is Card Centering Calculator free?

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

### Which has better reviews, MasterDex or Card Centering Calculator?

MasterDex is rated higher. MasterDex averages 4.8 out of 5 from 1.7K ratings, while Card Centering Calculator averages 4.7 from 2.5K ratings.

### Do MasterDex or Card Centering Calculator have ads?

Both MasterDex and Card Centering Calculator show ads.

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

MasterDex ships an update every 3 weeks, and Card Centering Calculator monthly. Most recently, MasterDex was updated on October 20, 2026 and Card Centering Calculator on October 19, 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.*