Proof Authentication vs Card Grading Tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Proof Authentication
Verify product authenticity instantly by scanning official security marks. Ensure your purchases are genuine with rapid and accurate authentication. Look for the Proof Security Mark on select consumer goods.
- Instant product authentication
- Scan Official Proof Security Marks
- High accuracy verification
- Fast results
- Supports selected consumer items
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Proof allows you to authenticate the products you buy with unprecedented speed and accuracy. By simply holding the Proof App over any Official Proof Security Mark you will know within seconds that the product you have purchased is 100% authentic. Look for the Proof Security Mark on selected consumer items.
Card Grading Tool
Analyze and measure the centering of your trading cards with precision tools. This app helps collectors determine grading potential and share results, supporting various card types.
- Accurate centering measurements
- User-friendly interface
- Customizable tools
- Built-in ratio table
- Save and share graded cards
- Offline access
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Take your trading card grading skills to the next level with Card Grading Tool! Designed for collectors and enthusiasts, this app provides precision tools to measure and analyze the centering of your cards, ensuring they meet professional grading standards. Key Features: - Accurate Centering Measurements: Align your card using our intuitive centering guide to calculate ratios like a pro. - User-Friendly Interface: Easy-to-follow steps for measuring top-bottom and left-right alignment. - Customizable Tools: Adjust colors and settings to match your preferences and enhance visibility. - Built-in Ratio Table: Quickly determine the grading potential of your card with a pre-loaded centering ratio guide. - Save and Share: Capture images of your graded cards and share them with fellow collectors. - Offline Access: No internet? No problem! Use the app anytime, anywhere. Why Choose Card Grading Tool? Grading the centering of a trading card is critical for maximizing its value. Our app simplifies the process, providing tools and tips to ensure your cards meet the industry's highest standards. Whether you’re a hobbyist or a professional collector, Card Grading Tool is your go-to solution. Perfect for All Card Enthusiasts: From vintage baseball cards to modern Pokémon and Magic: The Gathering collections, this app works seamlessly for any trading card type. Join thousands of collectors worldwide who trust Card Grading Tool to ensure their cards achieve the grades they deserve. Download today and start grading like a pro!
Screenshots
Verdict
The clearest difference is review sentiment: Proof Authentication at 50% against Card Grading Tool's 0%. Proof Authentication also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.
| Parameter | Proof Authentication | Card Grading Tool |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) — better | — |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 76 MB | 108 MB |
| Age rating | 4+ | 4+ |
| Developer | Proof Authentication Corporation | Computing & Dreams BVBA |
Customer experience
Proof Authentication
Card Grading Tool
In-app purchases
Proof Authentication
No in-app purchases
Card Grading Tool
No in-app purchases
Questions
Is Proof Authentication free?
Is Card Grading Tool free?
Do Proof Authentication or Card Grading Tool have ads?
Which is updated more often, Proof Authentication or Card Grading Tool?
Other comparisons
