Proof Authentication vs CardCalc
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.
CardCalc
Instantly calculate buy, sell, and trade values for trading cards. Offers simple and advanced modes for quick checks or detailed record-keeping. Supports multiple currencies and includes a dark mode option.
- Buy/Sell calculator with Trade % and Cash %
- Credit-to-Cash converter
- Unlimited entry saving
- Item labels for organization
- Real-time difference calculations
- Multiple currency support
- Dark mode
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CardCalc - The Pokémon Card Show Calculator Whether you're buying, selling, or trading cards at a show or shop, CardCalc makes pricing instant and accurate. Built for card show vendors, collectors, and shop owners. FREE FEATURES Perfect for card show calculations: - Buy/sell calculator with Trade % and Cash % - Quick Add — rapidly add multiple card prices at once - Live card price search powered by TCGPlayer data - Per-card percentage overrides - Preset % buttons for Trade and Cash - Manual card entry - Multiple currency symbols ($, C$, €, £, ¥, ₱) - No ads, no tracking, privacy-focused CARDCALC PRO Unlock the full card show toolkit: - Slab Scanner - scan a PSA graded slab's barcode to instantly identify the card, see its grade and population, and run an automatic fraud check - Slab Sheet - track scanned slabs with editable comp pricing, bulk cert lookup, and one-tap cert copying - Price history charts - 1M, 3M, 6M, and 1Y trends from TCGPlayer - Session history - save and review past card show sessions - Track bought, sold & traded - tag every card and session so you always know what happened - Full card detail sheets with condition pricing (NM, LP, MP, HP, DMG) - Export your Slab Sheet to CSV, or your session history to Excel PERFECT FOR - Pokémon card show vendors and collectors - Anyone managing complex buy/sell/trade deals - Card shops and hobbyists who need fast, accurate pricing EARLY ACCESS CardCalc is actively developed. New features and improvements ship regularly. Your feedback shapes what comes next. SUPPORT - Email: phu@cardcalcapp.com - Website: cardcalc.net - Terms of Use: https://cardcalc.net/terms.html - Privacy Policy: https://cardcalc.net/privacy.html From the community, for the community. CardCalc is the essential tool for every card deal.
Screenshots
Verdict
The clearest difference is in-app purchases: Proof Authentication at none against CardCalc's 4. Proof Authentication also leads on iOS requirement (14.4 vs 17.0). CardCalc's advantage is review sentiment (83% vs 50%) and update cadence (every 2 weeks vs every 2 months). On price, rating, 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. CardCalc sells 4 in-app purchases, starting at $3.99 per month. Proof Authentication asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.4 for Proof Authentication against 4.5 for CardCalc. Both are backed by a comparable volume of ratings — 7 and 31 respectively. Written reviews are what separate them: 50% of Proof Authentication's written reviews are positive against 83% of CardCalc's.
Proof Authentication ships an update every 2 months, CardCalc every 2 weeks. The most recent releases landed on September 8, 2026 and September 20, 2026 respectively.
| Parameter | Proof Authentication | CardCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) | 4.5 (31 ratings) — better |
| Positive reviews | 50.0% of reviews | 83.3% of reviews — better |
| Number of ratings | 7 | 31 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 76 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | Proof Authentication Corporation | CardCalc LLC |
Customer experience
Proof Authentication
CardCalc
In-app purchases
Proof Authentication
No in-app purchases
CardCalc
- CardCalc Pro Monthly$3.991 Month
- CardCalc Pro – 3 Month Access$5.993 Months
- CardCalc Pro Yearly$29.991 Year
- CardCalc Pro$5.99
Questions
Is Proof Authentication free?
Is CardCalc free?
Which has better reviews, Proof Authentication or CardCalc?
Do Proof Authentication or CardCalc have ads?
Which is updated more often, Proof Authentication or CardCalc?
Other comparisons
