Comparison

Karat Pro vs StackWise

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

Head to head
About

Karat Pro

Calculate the real-time value of gold, silver, platinum, and palladium. Supports various karats and weight units, with live market prices and adjustable payout percentages for scrap estimates.

Highlights
  • Calculate value for any gold karat
  • Supports multiple weight units
  • Live spot prices for 4 metals
  • Adjustable payout percentage
  • Batch calculation for multiple items
  • Share results instantly
Features
Read full description

The fastest, most accurate gold and precious metal calculator on the App Store. Instantly calculate the value of gold, silver, platinum, and palladium at current spot prices. Whether you're a jewelry buyer, pawn broker, scrap dealer, or just curious about your gold's worth — Karat Pro gives you instant answers. --- WHAT YOU CAN DO --- - Calculate gold value in any karat: 10K, 14K, 18K, 21K, 22K, 24K, and 999 fine - Enter weight in grams, troy ounces, pennyweights, tolas, or kilograms - See live spot prices for gold, silver, platinum, and palladium - Adjust payout percentage for scrap/refining estimates - Share results instantly - Works in USD, EUR, GBP, CAD, AUD --- KARAT PRO --- Upgrade to Karat Pro for the full experience: - Live spot prices (auto-updated from world markets) - All 4 metals: Gold, Silver, Platinum, Palladium - Payout percentage adjuster - Currency selector - Ad-free experience Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

StackWise

Read full description

Your next great find deserves more than a guess. Know your numbers. Build your stack. Make smart deals with confidence. Whether you’re chasing a bargain on the secondary market or pricing a deal across the counter, StackWise helps you know the numbers before money changes hands. Check precious metal prices, calculate item values any way you like, research slabbed coins, and keep your deals organized—all in one app. SPOT PRICES & CHARTS Follow gold, silver, platinum, and palladium in your preferred currency and weight unit. View daily price changes and historical charts from 7 to 90 days. CALCULATE ITEM VALUES Estimate values using spot price, purity, weight, quantity, and Percent of Spot. Choose a purity preset or enter a custom value, adjust the reference spot price, and compare a total price with the item’s metal value. SCAN GRADED COINS Scan slab labels from PCGS, NGC, CAC Grading, ICG, and ANACS to capture coin details, grades, and certification numbers. Recognition runs on your device. Review and edit recognized information, then open the grading service’s certification page. Automatic certificate-detail retrieval is available for supported ICG, CAC Grading, and ANACS records. StackWise Pro adds PCGS data retrieval using public lookup when available or your own PCGS API token. NGC certification verification opens on its website. GOLD-TO-SILVER RATIO See the current ratio, learn what it means, and compare it with default buying-preference thresholds. The ratio describes relative spot values; it does not predict future prices. SAVE DEALS & CREATE PDFs Organize items into named deals, review totals and metal weights, and print itemized deal PDFs. Saved deals remain on your device, with optional iCloud backup and restore through Pro. MARKET RESOURCES Open precious metals news, economic resources, and coin research sites in the in-app browser. START FREE Use spot prices, charts, the calculator, slab-photo recognition, certification website links, market resources, and the GSR guide with default thresholds. Save up to three deals and create deal PDFs. GO FURTHER WITH STACKWISE PRO • Unlimited saved deals. • More frequent automatic price updates while the app is active. • Automatic and manual iCloud backups of deals, settings, and PDF branding, with backup restore. • Automatic and manual PCGS coin-data lookup. • Custom deal-rating and GSR thresholds. • Deal PDF branding with your logo, business details, footer, and disclaimer. • Controls to show or hide Percent of Spot in the calculator, deals, and PDFs. PCGS details use public lookup when available. You can also connect your own PCGS API token in Settings. iCloud backups require iCloud Drive and available storage. Backups are saved snapshots, not automatic live synchronization between devices. Monthly and annual auto-renewing subscriptions are available. Current pricing is shown before purchase. Manage or cancel your subscription through your Apple Account settings. Market data, calculations, and GSR preferences are informational estimates, not investment advice or guaranteed buy/sell prices. Quotes may be delayed or unavailable. Internet access is required for new market data, online lookups, and external websites. Photo recognition may need correction and does not authenticate a coin or slab. Privacy Policy: https://stackwise-support.makerb.workers.dev/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://stackwise-support.makerb.workers.dev/

Screenshots

Karat Pro4 screens
StackWise4 screens

Verdict

The call

The clearest difference is update cadence: StackWise at daily against Karat Pro's every 2 weeks. Karat Pro's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, ads and in-app purchases 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. Karat Pro sells 3 in-app purchases, starting at $0.99 per month and StackWise sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Karat Pro ships an update every 2 weeks, StackWise daily. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
Karat Pro versus StackWise: the parameters behind the verdict, then further details
ParameterKarat ProStackWise
PriceFreeFree
Rating4.7 (15 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 2 weeksDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size27 MB5 MB
Age rating4+17+
DeveloperVikorus, LLCBrandon Clark

In-app purchases

3 purchases

Karat Pro

Subscriptions2
  • Karat Pro$0.991 Month
  • Karat Pro Annual$2.991 Year
One-time1
  • Karat Pro Lifetime$4.99
2 purchases

StackWise

Subscriptions2
  • StackWise Pro Monthly3 Days trial$3.991 Month
  • StackWise Pro Annual3 Days trial$29.991 Year

Questions

Is Karat Pro free?
Karat Pro is free to download, with in-app purchases available.
Is StackWise free?
StackWise is free to download, with in-app purchases available.
Do Karat Pro or StackWise have ads?
Neither Karat Pro nor StackWise shows ads.
Which is updated more often, Karat Pro or StackWise?
Karat Pro ships an update every 2 weeks, and StackWise daily. Most recently, Karat Pro was updated on October 24, 2026 and StackWise on October 26, 2026.

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