21 Card Counter vs Card Grader Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
21 Card Counter
This app helps users count cards for a 21 card game. By pressing buttons as cards appear, players can track a running total, with a higher positive count indicating a greater chance of winning. It serves as a reference tool for gameplay.
- Card counting for 21 games
- Track running totals
- Indicates player win probability
- Reference tool for gameplay
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간단한 21 카드 게임 카운팅 어플입니다. 카드가 나올 때마다 하단 버튼을 눌러 카운팅하며 플러스(+)가 커질수록 플레이어 승리 확률이 올라갑니다. 이 앱은 참고용으로 사용하세요 It's a 21 card game counting app. Press the bottom button to count each time the card comes out. The greater the plus (+), the greater the probability of winning the player. Use this app as a reference.
Card Grader Pro
Instantly assess the condition of your trading cards with AI-powered analysis of centering, edges, corners, and surface. For a more in-depth evaluation, choose expert human grading for detailed notes, rarity assessment, and submission guidance. Explore a community showcase of graded cards and view their market prices.
- AI-powered instant grading
- Expert human grading
- Condition notes and rarity assessment
- View card prices
- Community showcase
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Get your cards graded instantly with AI or opt for expert human grading! Instantly receive an estimated grade using advanced AI image recognition, analyzing centering, edges, corners, and surface quality. For a more detailed assessment, upgrade to human grading, where an expert will carefully review your card, provide condition notes, assess rarity, and offer guidance on whether it’s worth submitting to a professional grading company. Key Features: - AI-Powered Instant Grading: Get an instant grade with cutting-edge image analysis. - Expert Human Grading: Receive a detailed review with personalized feedback. - Market: Sell your own cards, and buy cards from other users! - Community Showcase: Browse and compare other users’ graded cards. - View card prices! - And more! Card Grader Pro provides AI and human grading as informational estimates only. We do not guarantee any card will receive the same grade from PSA, BGS, CGC, or any other official grading service, and we are not liable for differences in grades, grading outcomes, or related losses. Terms of use: https://firebasestorage.googleapis.com/v0/b/pack-fresh.firebasestorage.app/o/policies%2FTermsOfUse.html?alt=media&token=42470ab8-bf02-4619-8f13-0f44255f7a3b Card Grader Pro is an eBay Partner and may earn a commission on purchases made through links in the app.
Screenshots
Verdict
The clearest difference is review sentiment: 21 Card Counter at 100% against Card Grader Pro's 56%. 21 Card Counter also leads on in-app purchases (none vs 9) and iOS requirement (13.0 vs 15.5). Card Grader Pro's advantage is rating (4.7 vs 3.7) and ratings volume (5K vs 3). On price, ads 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. Card Grader Pro sells 9 in-app purchases, starting at $4.99 per month. 21 Card Counter asks for nothing beyond the download.
Card Grader Pro holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Card Grader Pro has 5K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of 21 Card Counter's written reviews are positive against 56% of Card Grader Pro's, so the app with the better star average is not the one people write more warmly about.
21 Card Counter ships an update fortnightly, Card Grader Pro every 4 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | 21 Card Counter | Card Grader Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 4.7 (5K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 56.3% of reviews |
| Number of ratings | 3 | 5K — better |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 34 MB | 148 MB |
| Age rating | 4+ | 4+ |
| Developer | Yeong Wu Heo | Daniel Yaakob |
Customer experience
21 Card Counter
Card Grader Pro
Bugs and requests
21 Card Counter
Not enough reviews yet to summarise bugs or requests.
Card Grader Pro
Reported bugs
2 issues- Grading information is the same for all cards
- Doesn't work half the time
Requested features
2 requests- Leveler when taking pictures
- More advanced grading capabilities
In-app purchases
21 Card Counter
No in-app purchases
Card Grader Pro
- Pro Monthly$4.991 Month
- Pro+ Monthly$9.991 Month
- Pro Yearly$49.991 Year
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- Pro+ Yearly$99.991 Year
- Human Grade$1.49
- Fast Human Grade$1.99
- Human Grade$2.99
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- Fast Human Grade$3.49
- Fast Human Grade$4.99
Questions
Is 21 Card Counter free?
Is Card Grader Pro free?
Which has better reviews, 21 Card Counter or Card Grader Pro?
Do 21 Card Counter or Card Grader Pro have ads?
Which is updated more often, 21 Card Counter or Card Grader Pro?
Other comparisons
