Comparison

Centering Check vs FR Queue Optimizer

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

Head to head
About

Centering Check

This tool uses AI to accurately measure the centering of trading cards from photos or screenshots. It provides instant grade estimates for major grading companies and allows for manual adjustments and sharing of results. Evaluate online listings and your own collection with confidence.

Highlights
  • AI-powered image correction for accurate centering
  • Instant grade estimates for PSA, BGS, CGC, TAG
  • Manual border adjustment for precise measurements
  • Editable history of all scanned cards
  • Front and back centering calculations
  • Shareable images with centering data
  • Grading standards reference guide
Features
Read full description

Centering Check is your premium pocket-sized tool for measuring card centering with pixel-perfect precision and getting instant grade estimates. Simply snap a photo or upload a screenshot of an online listing. Instead of worrying about perfect camera angles, our custom AI Warp Method instantly transforms your image into a flat, bird's-eye view, fixing any perspective distortion automatically. You have complete control to ensure absolute accuracy by manually adjusting the borders, giving you a precise look at the card's true centering in seconds. Key Features: ◆ Evaluate Online Listings Instantly: Take a screenshot of any online listing and upload it directly. Our AI Warp Method removes the angle distortion and auto-detects all borders, letting you check if the card has a 10 centering subgrade before you even buy it. ◆ Batch Ranking: Select multiple photos or shoot cards one after another. Every card is measured, saved to your collection log, and ranked by centering in a single pass, so you find the grading candidates immediately. ◆ Pinch-to-Zoom: Zoom in on your card's edges to make pixel-perfect micro-adjustments before finalizing your measurements. ◆ Editable History: Every card you upload is automatically saved. Go back and review, edit, or compare past measurements anytime. ◆ Accurate Grade Estimates: Instantly see estimated centering grades tailored to the specific front and back thresholds of major grading companies: PSA, BGS, CGC and TAG. ◆ Front & Back Support: Easily toggle between front and back calculations to get a complete picture of your card's centering quality. ◆ Share Your Pulls: Generate a sleek, shareable image of your card with its centering measurements and grade estimates overlaid - perfect for sharing with buyers, sellers, or your community. ◆ Grading Standards Reference: A dedicated section with the official centering thresholds for every supported grading company, so you know exactly what each grade requires. ◆ Zero Interruptions: Focus entirely on your card's centering without annoying pop-ups or banners. Stop wondering if your card is worth sending in for grading. Use Centering Check to evaluate your collection, prep your submissions, and buy or sell with confidence. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FR Queue Optimizer

Features
Read full description

FR Queue Optimizer is your mobile planning companion for Walmart queue drops. It calculates exactly when to start your bot and when to change your refresh delay so your automation hits queue live on the dot—typically 8:00 PM Wednesday. Whether you run a desktop bot or automation on another device, this app handles the timing math and sends native alerts to your phone so you never miss a start or drop window. WHAT IT DOES Your automation refreshes a product page on a loop using a delay in milliseconds. FR Queue Optimizer gives you exactly two numbers: • Start delay — set this when you begin your task • Drop delay — switch to this at the exact clock time shown The app schedules everything around your timezone and tells you precisely when each step happens, so your final refresh lands exactly at queue live. KEY FEATURES PRESET PLANS Ready-made schedules for common final delays (5,000 ms down to 1,000 ms). Each card shows when to start, what delay to use, and the exact drop time. Includes Late Drop presets if you want to start closer to go-live. CUSTOM OPTIMIZER Enter your own start time, delays, and queue-live time. Supports Central, Eastern, and Pacific timezones. INSTANT & DEFERRED SWITCH MODES Some bots apply a new delay immediately; others finish one more slow refresh first. Toggle between Instant Switch and Deferred Switch so your drop reminder matches how your bot actually behaves. LIVE DEMO Run a short simulation on any preset to verify the timing before a real drop. NATIVE PHONE ALERTS Activate a plan and get reminders on your iPhone: • 10 minutes before start • 10 minutes before drop • At start, drop, and queue-live time Alerts work in the background—enable notifications when prompted and use Test Alert to confirm they’re working. WORKS OFFLINE All scheduling runs on your phone. No account required. No server needed. BUILT FOR TEAMS Share the same start times and drop windows with your group so everyone hits queue live together. IMPORTANT This app is a timing planner and alert tool. It does not run automation or purchase products for you. Your bot or automation software still runs on your PC or other device—you use FR Queue Optimizer to know exactly when to start and when to change delays. Perfect for resellers and collectors who want reliable queue timing without guessing clock math on drop night.

Screenshots

Centering Check4 screens
FR Queue Optimizer4 screens

Verdict

The call

The clearest difference is in-app purchases: FR Queue Optimizer at none against Centering Check's 3. FR Queue Optimizer also leads on update cadence (every 4 days vs every 2 weeks). On price, ads, 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. Centering Check sells 3 in-app purchases, starting at $3.99 per month. FR Queue Optimizer asks for nothing beyond the download.

UpkeepUpdate frequency

Centering Check ships an update every 2 weeks, FR Queue Optimizer every 4 days. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
Centering Check versus FR Queue Optimizer: the parameters behind the verdict, then further details
ParameterCentering CheckFR Queue Optimizer
PriceFreeFree
Rating4.6 (51 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings51 — better—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size47 MB10 MB
Age rating4+4+
DeveloperGiosue CastellanoFrancisco Montenegro

In-app purchases

3 purchases

Centering Check

Subscriptions2
  • Monthly Centering Check PRO1 Month trial$3.991 Month
  • Yearly Centering Check PRO$39.991 Year
One-time1
  • Lifetime Subscription PRO$99.99
None

FR Queue Optimizer

No in-app purchases

Questions

Is Centering Check free?
Centering Check is free to download, with in-app purchases available.
Is FR Queue Optimizer free?
FR Queue Optimizer is free to download, with no in-app purchases.
Do Centering Check or FR Queue Optimizer have ads?
Neither Centering Check nor FR Queue Optimizer shows ads.
Which is updated more often, Centering Check or FR Queue Optimizer?
Centering Check ships an update every 2 weeks, and FR Queue Optimizer every 4 days. Most recently, Centering Check was updated on October 21, 2026 and FR Queue Optimizer on October 10, 2026.

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