Comparison

Card Centering Calculator Pro vs gemly_card

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Card Centering Calculator Pro

This tool helps collectors accurately measure the centering of trading cards and sports cards. It provides precise measurements and compares potential grades from major grading companies, aiding in informed decisions before professional submission.

Highlights
  • Camera and manual measurement tools
  • Precise centering ratio calculation
  • Grade comparisons across major companies
  • Front and back side grading
  • Built-in grading standards reference
  • Compatible with all card types
Features
Read full description

Card Centering Calculator Pro is the easiest way to measure your card's centering ratios before submitting for professional grading. Whether you collect Pokémon, Yu-Gi-Oh!, One Piece, Lorcana, Magic: The Gathering, or sports cards like baseball, basketball, and football, the app calculates precise centering measurements (e.g., 55/45 or 60/40) and shows you the highest possible grades from major grading companies, including PSA, BGS, CGC, SGC, TAG, and ACE. Key Features — Camera & Manual Measurement Snap a photo of your card or manually place measurement guides on each side. Use the zoom feature for ultra-precise adjustments. — Grade Comparisons Instantly compare the best possible centering grades from PSA, BGS, CGC, SGC, TAG, and ACE as you adjust your measurements. Find the grading company that will give your card the highest centering score. — Front & Back Side Grading Measure centering for both sides of your card. Different grading companies apply different centering standards to each side. — Grading Standards Reference A built-in handbook covering the official centering requirements from PSA, BGS, CGC, SGC, TAG, and ACE — all in one place. — Compatible With All Cards From TCG cards like Pokémon, One Piece, Yu-Gi-Oh!, Lorcana, and Magic: The Gathering to sports cards like baseball, basketball, and football, this app works with any card you need to measure. ——————————————— Why Centering Matters Centering is one of the most important factors in a card's professional grade. Even a card in perfect condition can receive a lower grade and lose significant value due to poor centering. Card Centering Calculator Pro helps you measure centering ratios accurately, so you can make informed decisions before spending money on grading submissions. Who Should Use Card Centering Calculator Pro Collectors: Make sure your cards meet grading standards before submitting, saving time and money. Sellers & Traders: Verify centering to maximize the value of your cards before listing or trading. Buyers: Assess centering on potential purchases to avoid investing in cards that won't grade well. Note: Card Centering Calculator Pro measures centering ratios only. Professional grading companies like PSA, BGS, CGC, SGC, TAG, and ACE also evaluate edges, corners, surface scratches, and overall condition. This app does not assess those additional factors. Terms of Use: https://www.titanium.dev/apps/terms Privacy Policy: https://www.titanium.dev/apps/privacy

About

gemly_card

Features
Read full description

Gemly measures the centering of your trading cards. • Snap a photo — the card is auto-straightened • Card edges align automatically; just set the inner artwork frame • Zoom in on a ruler grid for precise, pixel-level adjustment • Instantly see top/bottom and left/right border ratios (e.g. 52/48) and a centering score • Save your measurements and revisit them anytime Know exactly how well-centered your card is before you send it off for grading. Note: Gemly is a reference measuring tool and does not provide official grades.

Screenshots

Card Centering Calculator Pro4 screens
gemly_card2 screens

Verdict

The call

The clearest difference is price: Card Centering Calculator Pro at Free against gemly_card's $0.99. Card Centering Calculator Pro also leads on iOS requirement (15.1 vs 17.6). gemly_card's advantage is in-app purchases (none vs 3) and update cadence (every 5 days vs every 7 months). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Card Centering Calculator Pro is free to download; gemly_card costs $0.99 up front. Card Centering Calculator Pro sells 3 in-app purchases, starting at $11.99 per year. gemly_card asks for nothing beyond the download.

UpkeepUpdate frequency

Card Centering Calculator Pro ships an update every 7 months, gemly_card every 5 days. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 5 level
Card Centering Calculator Pro versus gemly_card: the parameters behind the verdict, then further details
ParameterCard Centering Calculator Progemly_card
PriceFree — better$0.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 7 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size53 MB5 MB
Age rating+44+
DeveloperJoseph Steinonnomad inc.

In-app purchases

3 purchases

Card Centering Calculator Pro

Subscriptions2
  • Yearly$11.991 Year
  • Yearly$19.991 Year
One-time1
  • Lifetime$29.99
None

gemly_card

No in-app purchases

Questions

Is Card Centering Calculator Pro free?
Card Centering Calculator Pro is free to download, with in-app purchases available.
Is gemly_card free?
gemly_card costs $0.99, with no in-app purchases.
Do Card Centering Calculator Pro or gemly_card have ads?
Neither Card Centering Calculator Pro nor gemly_card shows ads.
Which is updated more often, Card Centering Calculator Pro or gemly_card?
Card Centering Calculator Pro ships an update every 7 months, and gemly_card every 5 days. Most recently, Card Centering Calculator Pro was updated on November 2, 2026 and gemly_card on October 25, 2026.

Other comparisons