Comparison

Number Master vs Card Centering Calculator Pro

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

Head to head
About

Number Master

Features
Read full description

Improve your arithmetic and mental arithmetic with addition, subtraction, multiplication, and division operations. If you do it repeatedly, you will soon become a master of mental arithmetic. Show off your mental arithmetic skills through competition ** function * Arithmetic operation (+,-, x, ÷) * Two-player match mode

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

Screenshots

Number Master3 screens
Card Centering Calculator Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Number Master at none against Card Centering Calculator Pro's 3. Number Master also leads on update cadence (every 9 days vs every 7 months). Card Centering Calculator Pro's advantage is ads (none vs shown). On price, device support and iOS requirement 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

Both are free to download. Card Centering Calculator Pro sells 3 in-app purchases, starting at $11.99 per year. Number Master asks for nothing beyond the download.

UpkeepUpdate frequency

Number Master ships an update every 9 days, Card Centering Calculator Pro every 7 months. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 6 level
Number Master versus Card Centering Calculator Pro: the parameters behind the verdict, then further details
ParameterNumber MasterCard Centering Calculator Pro
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 days — betterEvery 7 months
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.515.1 — better
Further details — not scored
Size25 MB53 MB
Age rating4++4
DeveloperCometStudio(KR)Joseph Stein

In-app purchases

None

Number Master

No in-app purchases

3 purchases

Card Centering Calculator Pro

Subscriptions2
  • Yearly$11.991 Year
  • Yearly$19.991 Year
One-time1
  • Lifetime$29.99

Questions

Is Number Master free?
Number Master is free to download, with no in-app purchases.
Is Card Centering Calculator Pro free?
Card Centering Calculator Pro is free to download, with in-app purchases available.
Do Number Master or Card Centering Calculator Pro have ads?
Number Master shows ads; Card Centering Calculator Pro does not.
Which is updated more often, Number Master or Card Centering Calculator Pro?
Number Master ships an update every 9 days, and Card Centering Calculator Pro every 7 months. Most recently, Number Master was updated on November 3, 2026 and Card Centering Calculator Pro on November 2, 2026.

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