# OPTCG Deck Builder vs Card Centering Calculator

The clearest difference is ratings volume: Card Centering Calculator at 2.6K against OPTCG Deck Builder's 72. OPTCG Deck Builder's advantage is iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. OPTCG Deck Builder sells 4 in-app purchases, starting at $0.99 per 7 days 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 — 4.6 for OPTCG Deck Builder against 4.7 for Card Centering Calculator. That said, the two scores are not equally well evidenced: Card Centering Calculator has 2.6K ratings behind it against 72, so its average is the more settled of the two. Written reviews split almost evenly too, at 59% and 60% positive.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | OPTCG Deck Builder | Card Centering Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (72 ratings)](https://appshunter.io/ios/app/optcg-deck-builder-card-dex/id6451478386/reviews) | **[4.7 (2.6K ratings)](https://appshunter.io/ios/app/card-centering-calculator/id6661022837/reviews)** |
| Number of ratings | 72 | **2.6K** |
| Positive reviews | 59.3% of reviews | **60.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 21 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Leonardo Ivan Quintero Vega](https://appshunter.io/developer/1698485068) | [Jade Lizard Software LLC](https://appshunter.io/developer/528029155) |

## What reviewers say

### OPTCG Deck Builder

[App page](https://appshunter.io/ios/app/optcg-deck-builder-card-dex/id6451478386)

This app helps One Piece Trading Card Game players build and organize their decks. It features a searchable card database, an intuitive deck editor, and helpful deck statistics to improve strategy and consistency. New card sets are regularly added to keep your decks up-to-date.

**Highlights:** Searchable card database, Intuitive deck editor, Deck statistics (color balance, curve), Regularly updated card sets, Deck organization and planning

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DeckBuilder Pro | $0.99 | per 7 days |
| DeckBuilder Pro | $3.99 | per month |
| DeckBuilder Pro | $29.99 | per year |
| Banish Ads | $3.49 | one-time |


### 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 OPTCG Deck Builder free?

OPTCG Deck Builder 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, OPTCG Deck Builder or Card Centering Calculator?

Card Centering Calculator is rated higher. OPTCG Deck Builder averages 4.6 out of 5 from 72 ratings, while Card Centering Calculator averages 4.7 from 2.6K ratings.

### Do OPTCG Deck Builder or Card Centering Calculator have ads?

Both OPTCG Deck Builder and Card Centering Calculator show ads.

### Which is updated more often, OPTCG Deck Builder or Card Centering Calculator?

OPTCG Deck Builder ships an update monthly, and Card Centering Calculator monthly. Most recently, OPTCG Deck Builder was updated on November 7, 2026 and Card Centering Calculator on November 4, 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.*