Centering Check vs keepbin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
keepbin
This app helps you declutter your photo library by presenting one image at a time for you to keep or delete. It prioritizes videos for maximum space recovery and ensures your photos never leave your device. All deletions are final only after your explicit confirmation.
- Random photo presentation
- Swipe to keep or delete
- Bin for recoverable deletions
- Prioritizes video deletion
- Offline functionality
- No cloud upload
- One-time deletion confirmation
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You have nine thousand photos and a full phone. Opening the gallery and trying to pick doesn't work: there are too many, they all look important, and you end up closing it without deleting anything. keepbin turns the problem around. It shows you one photo, at random, full screen. All you have to do is decide about that one. Swipe right and you keep it. It never comes up again. Swipe left and it drops into the bin. NOTHING IS DELETED UNTIL YOU SAY SO The bin is just a waiting list. You can undo, close the app and come back tomorrow: what you binned is still there. When you have had enough, you empty it all at once, and that is where it actually gets deleted, with a single confirmation instead of forty. VIDEOS ARE WHAT TAKE UP ROOM A minute of 4K weighs more than three hundred photos. keepbin mixes them in with everything else, because they are the ones that will really give you your space back. YOUR PHOTOS NEVER LEAVE YOUR PHONE No accounts, no sign-up, no cloud. keepbin never uploads, copies or shares a single one of your photos. Nobody sees them: not us, not anyone. AN HONEST HEADS-UP When you delete, iOS keeps the photos for another 30 days under "Recently Deleted". You can restore them during that time, but the space is not quite yours yet. The app tells you this before and after deleting, because we would rather warn you than promise you space you don't have yet. FREE, AND NOTHING ELSE No ads, no subscriptions, no in-app purchases. In English and Spanish. Works offline.
Screenshots
Verdict
The clearest difference is review sentiment: keepbin at 100% against Centering Check's 0%. keepbin also leads on in-app purchases (none vs 3) and rating (5.0 vs 4.6). Centering Check's advantage is ratings volume (51 vs 2) and device support (3 vs 1). On price, update cadence, ads 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
Both are free to download. Centering Check sells 3 in-app purchases, starting at $3.99 per month. keepbin asks for nothing beyond the download.
keepbin holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Centering Check has 51 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Centering Check's written reviews are positive against 100% of keepbin's.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.
| Parameter | Centering Check | keepbin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (51 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 51 — better | 2 |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 47 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Giosue Castellano | Juan Martin |
Customer experience
Centering Check
keepbin
In-app purchases
Centering Check
- Monthly Centering Check PRO1 Month trial$3.991 Month
- Yearly Centering Check PRO$39.991 Year
- Lifetime Subscription PRO$99.99
keepbin
No in-app purchases
Questions
Is Centering Check free?
Is keepbin free?
Which has better reviews, Centering Check or keepbin?
Do Centering Check or keepbin have ads?
Which is updated more often, Centering Check or keepbin?
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