Comparison

Proof Authentication vs Ding Detect

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Instant product authentication
  • Scan Official Proof Security Marks
  • High accuracy verification
  • Fast results
  • Supports selected consumer items
Read full description

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.

About

Ding Detect

Instantly measure the centering of trading cards using your phone. Get estimated grade tiers from major grading companies and track your collection strategy. Export and share your results.

Highlights
  • Centering analysis for front and back
  • Grade predictions for major companies
  • Customizable guide controls
  • Scan history tracking
  • Dashboard performance stats
  • Export and share results
Features
Read full description

DingDetect – Card Centering Checker Know your centering before you submit. DingDetect lets you measure the centering of your trading cards in seconds and instantly see how your card stacks up against PSA, BGS, CGC, ACE, and TAG grading standards — right from your phone. Whether you're deciding which cards are worth submitting or building a collection strategy, DingDetect gives you the data you need before spending on grading fees. HOW IT WORKS Take a photo or upload from your gallery, align the guide lines to your card's borders, and DingDetect calculates the top, bottom, left, and right centering percentages. Results are mapped instantly against published grading standards so you can see your estimated grade tier for each company at a glance. FEATURES • Centering analysis for front and back of any card • Grade predictions for PSA, BGS, CGC, ACE, and TAG • Draggable guide tabs or edge sliders — choose the control style that works for you • Scan history to track and revisit every card you've checked • Dashboard stats showing total scans and per-company centering performance over time • Customizable settings — show only the grading companies you care about • Export and share your centering results as an image COMING SOON Ding Detect — AI-powered surface scanning to automatically identify dings, scratches, and print defects before you submit. FREE & PRO DingDetect is free to try with 2 scans per day. Upgrade to Pro for unlimited scans, sharing, and full access to all features. DingDetect is an independent app and is not affiliated with PSA, BGS, CGC, ACE, TAG or any other grading company. Centering estimates are based on publicly available grading standards and are for reference purposes only. Actual grades may vary.

Screenshots

Proof Authentication3 screens
Ding Detect4 screens

Verdict

The call

The clearest difference is review sentiment: Ding Detect at 100% against Proof Authentication's 50%. Ding Detect also leads on rating (5.0 vs 4.4) and update cadence (every 2 weeks vs every 2 months). Proof Authentication's advantage is in-app purchases (none vs 1) and ratings volume (7 vs 2). On price, ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ding Detect sells 1 one-off in-app purchase. Proof Authentication asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ding Detect holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 50% of Proof Authentication's written reviews are positive against 100% of Ding Detect's.

UpkeepUpdate frequency

Proof Authentication ships an update every 2 months, Ding Detect every 2 weeks. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
Proof Authentication versus Ding Detect: the parameters behind the verdict, then further details
ParameterProof AuthenticationDing Detect
PriceFreeFree
Rating4.4 (7 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings7 — better2
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.4 — better15.5
Further details — not scored
Size76 MB66 MB
Age rating4+4+
DeveloperProof Authentication CorporationTechcave, LLC

Customer experience

Proof Authentication

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Ding Detect

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Proof Authentication

No in-app purchases

1 purchases

Ding Detect

One-time1
  • Card Centering Tool$3.99

Questions

Is Proof Authentication free?
Proof Authentication is free to download, with no in-app purchases.
Is Ding Detect free?
Ding Detect is free to download, with in-app purchases available.
Which has better reviews, Proof Authentication or Ding Detect?
Ding Detect is rated higher. Proof Authentication averages 4.4 out of 5 from 7 ratings, while Ding Detect averages 5.0 from 2 ratings.
Do Proof Authentication or Ding Detect have ads?
Neither Proof Authentication nor Ding Detect shows ads.
Which is updated more often, Proof Authentication or Ding Detect?
Proof Authentication ships an update every 2 months, and Ding Detect every 2 weeks. Most recently, Proof Authentication was updated on September 8, 2026 and Ding Detect on September 22, 2026.

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