ACE vs Slabmint
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACE
This app uses AI to analyze your One Piece Trading Card Game cards, providing detailed pre-grade estimates with subgrades for centering, corners, edges, and surface. It automatically identifies cards and compares them to reference images, offering a convenient way to assess your collection's condition.
- AI-powered card grading
- Detailed grade reports with subgrades
- Automatic card identification
- Reference image comparison
- Batch grading for multiple cards
- Shareable grade reports
- Scan history tracking
Read full descriptionHide full description
Ace uses advanced AI to analyze your One Piece Trading Card Game cards and deliver detailed pre-grade estimates — right from your phone. HOW IT WORKS 1. Photograph the front and back of your card 2. Ace's AI identifies your card and matches it against a reference catalog 3. Receive a detailed grade report with subgrades for centering, corners, edges, and surface DETAILED GRADING Every scan produces a comprehensive report modeled after professional grading standards. Each card receives an overall grade (1-10) along with individual subgrades and confidence scores. The AI examines your card for whitening, centering shifts, corner wear, edge damage, and surface defects — on both the front and back. CARD IDENTIFICATION Ace automatically identifies your card by reading the card number and matching it against a catalog of One Piece TCG cards. It even distinguishes between regular art, alternate art, and parallel variants using visual comparison. REFERENCE COMPARISON When your card is identified, Ace fetches a pristine reference image and uses it as a baseline during grading — the same way a professional grader would compare against a known standard. BATCH GRADING Grade multiple cards in a single session with batch scanning. Photograph each card, add it to your queue, and submit them all at once. Track progress as each card is graded. SHARE YOUR RESULTS Generate a styled grade report image and share it directly to social media, messaging apps, or anywhere else using the native share sheet. SCAN HISTORY All your past scans are saved so you can revisit grades and track your collection's condition over time. FREE & PREMIUM Start grading for free with a daily scan limit. Upgrade to Premium for unlimited scans, batch grading, and priority processing. IMPORTANT DISCLAIMER Ace provides AI-powered pre-grade estimates only. Results may differ from official grading services such as PSA, BGS, or CGC. Do not use Ace to guarantee or predict grades from professional grading companies. Link to Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Slabmint
Read full descriptionHide full description
Grading a single card costs anywhere from $17 to $80, and the wait runs for months. Most cards come back a 9. Slabmint measures the card on your iPhone first, so you only send the ones worth sending. MEASURED, NOT GUESSED Photograph the card. Slabmint finds the outline, flattens the perspective and locates the printed border, then reports how far off centre the card sits — left to right and top to bottom, to a tenth of a percent. If the border is hard to see, drag the four guides yourself; a magnifier follows your finger and the numbers update as you drag. WHITENING ON EVERY EDGE AND CORNER The back of a card is where grades are lost. Slabmint checks a thin band around the whole card for the light, desaturated pixels that mean whitening, scores each edge and corner, and paints what it found straight onto the image. SURFACE LENS Three ways to re-light the captured card: raking light for fine scratches, relief for dents and creases, and a foil sweep that rotates colour across holo patterns. Tell Slabmint what you see and it factors that in. FIVE GRADING COMPANIES, SIDE BY SIDE The same measurements are compared against the published centering tolerances of PSA, Beckett (BGS), CGC, SGC and TAG. See which company's scale suits the card in your hand, and exactly which grade the centering allows. AN ANSWER, NOT JUST A NUMBER Every estimate breaks down into named factors — front centering, back centering, corners, edges, surface — so you can see what is holding the card back. Then Slabmint compares the expected return against the real grading fee and shipping, and tells you the gem rate you would need to break even. Fees are current as of October 2026, paused service levels are marked, and you can edit any fee yourself. SUBMISSION PLANNER Group the keepers into one submission, with the total cost, the expected return and the turnaround for the service level you picked. Track it from planning to slab. EVERYTHING ON THE DEVICE Measurement runs on your iPhone using Apple's Vision and Core Image frameworks. Your photographs never leave the device. There is no account and no analytics. If you search the card catalogue, only the text you type is sent to the public Pokémon TCG API to look up names, sets and market prices — you can skip it and type the details yourself. NOW IN 16 LANGUAGES English, Japanese, Korean, Simplified and Traditional Chinese, German, French, Spanish, Italian, Portuguese, Dutch, Polish, Russian, Thai, Indonesian and Vietnamese. FREE AND MEMBERSHIP Measuring cards, the grade odds for all five companies and the shareable report are free, with no limit. Slabmint Collector adds the submit-or-keep calculations and the submission planner. Slabmint Collector is $6.99 per month, $29.99 per year with a 7-day free trial, or $59.99 once for lifetime access. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours of the period ending. Manage or cancel in your Apple Account settings. Any unused part of a free trial is forfeited when a subscription is purchased. Privacy Policy: https://slabmintapp.web.app/privacy Terms of Use (EULA): https://slabmintapp.web.app/terms Slabmint is an independent tool. It is not affiliated with, endorsed by or connected to PSA, Beckett (BGS), CGC, SGC or TAG. An estimate in the app is not a promise of the grade a company will assign. Grading fees and market values change — check them with the grading company before you submit.
Screenshots
Verdict
The clearest difference is update cadence: ACE at daily against Slabmint's fortnightly. ACE also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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
Both are free to download. ACE sells 1 in-app purchase, starting at $4.99 per month and Slabmint sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
ACE ships an update daily, Slabmint fortnightly. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.
| Parameter | ACE | Slabmint |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Daily — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Terror LLC | Zubair Shah |
In-app purchases
ACE
- ace premium monthly$4.991 Month
Slabmint
- Collector — Monthly$6.991 Month
- Collector — Yearly7 Days trial$29.991 Year
- Slabmint Lifetime$59.99









