# ZeroPop: Card Grader & Scanner — user reviews > 15 indexed App Store user reviews of ZeroPop by Hanlon Digital LLC, rated 4.60/5 from 100 ratings. - Source: https://appshunter.io/ios/app/zeropop-card-grader-and-scanner/id6760512726/reviews - App overview in markdown: https://appshunter.io/ios/app/zeropop-card-grader-and-scanner/id6760512726.md - Rating breakdown: 5★ 84 · 4★ 7 · 3★ 0 · 2★ 2 · 1★ 7 ## Most critical reviews (10 lowest-rated) ### 1/5 — Junk *2026-09-09* Scan the same card and keep getting different grades every time **Developer response:** You’re right. The same card should get a reasonably consistent grade, and we’re sorry that didn’t happen. Even PSA, TAG, and other grading companies can give different grades when a card is cracked and resubmitted, but the results shouldn’t vary wildly. Different photos can affect the grade, especially if there’s glare, shadows, blur, or a slight change in angle. For the best results, remove the card from its sleeve or holder, clean your camera lens, use bright indirect light, place it on a flat contrasting background, and make sure every corner and edge is clear. If you’re still getting very different grades, please contact us through the app and send us the scans so we can look into it. ### 1/5 — Thinks 25th anniversary is a sticker *2026-08-17* I used my LAST free scan on the cyntias garchomp anniversary card and it got a 4.5 because it thought the cyntia photo was a STICKER same with the 25 anniversary on the left side of the card TERRIBLE APP DO NOT RECOMMEND **Developer response:** I dug into your exact scan and you were right. The grader read the printed gold 25th anniversary badge and the small Cynthia portrait on your Celebrations Garchomp C LV.X as stickers stuck on the card, and that wrongly tanked your surface score to a 4.5. It also mislabeled the card as a Supreme Victors Charizard G, which is why the price looked off too. Both were bugs on our end, both are fixed, and the fix is already live. I regraded your card with the correct data: it's a 7.0 now (the corner and edge wear is real, but the surface is clean), with the right card, set, and price. I also added 15 free scans to your account, no email needed. Thanks for the writeup. Reports like this make the grader better for everyone. ### 1/5 — U keep grading my psa 10 8.5?lol *2026-07-18* Ya this site is at best way too stingy cause I’ve looked at multiple of my PSA 10 graded cards and they’re getting anywhere between eight and 8.5 points **Developer response:** Thanks for the feedback, this is genuinely helpful. A couple things worth knowing: if you’re scanning cards inside their slabs, glare off the case can lower what the AI sees, so raw or well-lit, glare-free photos give the most accurate read. It’s also worth noting that ZeroPop grades every card fresh against consistent, current standards, so it can occasionally read a card differently than the grade on the label, especially on older slabs. We’d rather give you an honest, consistent assessment than an inflated one. That said, we recalibrate regularly and examples like yours help us improve, so please reach out through the app and we’ll take a look at your scans. ### 1/5 — Scam app *2026-07-15* Really bad app …. Vibe coded slop with not skill don’t download it’s a complete scam **Developer response:** Hi, sorry to hear ZeroPop missed the mark for you. It’s a real product built and maintained by an indie developer, with AI grading estimates, collection tracking, and live pricing, plus a free tier so you can try everything before paying. If something didn’t work as expected, reach out through the support link on our App Store page and we’ll make it right. Robert, ZeroPop ### 1/5 — Not accurate *2026-05-10* I took a picture on a flat surface and it said eight even though it was perfect. I sent it to get grading and it got a 10 and another card got a nine and got another 10 not accurate at all. **Developer response:** Appreciate the feedback. ZeroPop’s pre-grade is an AI estimate from two photos. PSA grades in-hand with calibrated equipment, and even they grade the same card differently on resubs (which is why crack-and-resub is a whole market). We intentionally err conservative so people aren’t overpaying for submissions. Congrats on the 9s and 10s, that’s a great outcome for you. Feel free to send us a support email and we’ll look into your grade and why this happened.​​​​​​​​​​​​​​​​ ### 2/5 — Decent grader *2026-08-03* Maybe with time. I think it’s not bad for centering but it’s been drastically over grading with 9s for corners, edges, and surface that would realistically be 6 or a lucky 7. **Developer response:** Thanks for taking the time to write this up, and for grading against your own tools. Feedback this specific is rare and genuinely useful. You nailed the centering point. We measure centering instead of eyeballing it, exactly because most AI graders fall apart there, so hearing it line up with your centering tool means a lot. On corners, edges, and surface, your read matches what we see internally. Those three run a little optimistic against strict graders, and tightening them is what we are heads down on right now. We want accuracy, not friendly grades, so we are calibrating those three down to match. On Slab or Sell, you caught a real bug and we already fixed it. The newest version pulls real sold comps for graded cards, so a 1968 Brooks Robinson PSA 10 will show a true market value, not $56. Update and rescan it and you should see the difference. If anything still looks off, email me, I want to see it. Really appreciate you pushing us. ### 3/5 — Decent grader *2026-06-14* Very preliminary. May be about 1 grade level optimistic in corners, edges, and surface compared to my other graders but spot on for centering compared to my centering tool, which is saying something. For some reason, most ai really struggle with centering. The sell or slab function needs help. A psa 10 1968 Brooks Robinson is NOT a $56 card. **Developer response:** Thanks for taking the time to write this up, and for grading against your own tools. Feedback this specific is rare and genuinely useful. You nailed the centering point. We measure centering instead of eyeballing it, exactly because most AI graders fall apart there, so hearing it line up with your centering tool means a lot. On corners, edges, and surface, your read matches what we see internally. Those three run a little optimistic against strict graders, and tightening them is what we are heads down on right now. We want accuracy, not friendly grades, so we are calibrating those three down to match. On Slab or Sell, you caught a real bug and we already fixed it. The newest version pulls real sold comps for graded cards, so a 1968 Brooks Robinson PSA 10 will show a true market value, not $56. Update and rescan it and you should see the difference. If anything still looks off, email me, I want to see it. Really appreciate you pushing us. ### 4/5 — Nice app to have before sending cards away to grade *2026-08-29* Love the app amazing and kind developer only problem is I left a 1 star review saying it didn’t work and only had 2 of my scans returned when I used well over 15. Please check and advise **Developer response:** Sorry about that. Most scan problems come down to lighting or angle, so try even light with no glare and lay the card flat instead of holding it up. If it still fails, email hello@zeropop.app with your phone model and the card you were scanning. I'll look into it and write back. Robert, ZeroPop ### 5/5 — Great *2026-06-30* Great ### 5/5 — So Cool! *2026-05-21* Awesome app! Was able to quickly scan my nephews cards for him and he got so excited to see what they could be worth. This is a must for any collector. ## Most praised reviews (5 highest-rated) ### 5/5 — Great APP *2026-05-14* I used this against minty slab and zeropop is hands down a better app than MS. It picks up the card very well and the centering information is spot on when comparing it to a Manuel centering tool. The surface scans are really good too. This app is now part of my grading process. The only complaint i have is the ebay comps are a little off but i am not using it for that feature. I use the scan tool on ebay app for that. All and all, this is a great AI app that picks up the card very easily with no problems. It is now a major part of my grading protocol. ### 5/5 — On Point 🔥🔥 *2026-04-22* Been using this way more than I expected to! The grading is quick and gives you a legit sense of whether a card is worth sending in or not. Love the UI - the black and green neon gives it a super clean, slick feel. No fluff, just does the job well. If you’re into cards, this is super useful! Nicely done!! ### 5/5 — Amazing TCG app!!! *2026-04-18* Used this to check what cards are selling for in the market now. Surprisingly accurate! Will recommend ### 5/5 — Spot on card grading *2026-04-17* I use it for Pokemon, NFL, and NBA TCG. Grades and binders my cards perfectly. ### 5/5 — ZeroPop – Solid Grader for Pokemon *2026-04-11* Been using this with my Pokemon cards and it’s genuinely useful. Scans corners, edges, surface, and centering in seconds and spits out PSA/BGS/CGC estimates before you commit to a submission. What I like most is that nothing gets uploaded — all the AI runs on your phone, so your cards stay private. Free tier gives you 25 scans/month which is plenty to start. Not a replacement for your own eye, but it’s caught issues I would’ve missed.​​​​​​​​​​​​​​​​ --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-13.*