Best Scrap Gold Calculator Apps in 2026 (Compared)
If you're still calculating melt value with a phone calculator and a spot price you Googled ten minutes ago, you're working harder than you need to. Scrap gold calculator apps have gotten significantly better in the last couple of years, and the right one can save you time on every deal, reduce costly math errors, and keep your buying data organized in one place.
But not all calculator apps are built the same. Some are basic converters that just do the math. Others are full buying platforms with inventory tracking, deal scoring, and portfolio management. The best choice depends on how you buy, how often you buy, and what you need beyond a simple melt value number.
Here's a breakdown of the best scrap gold calculator apps available in 2026 and what each one actually offers.
What to Look For in a Scrap Gold Calculator App
Before comparing apps, know what matters. A good scrap gold calculator app should have these fundamentals covered:
Live spot price integration. The calculator should pull current gold and silver prices automatically. If you're manually entering spot price, that's one more thing to get wrong — and stale prices cost money.
Multi-karat support. You need to calculate across 10K, 14K, 18K, 22K, and 24K at minimum. Bonus if it supports 8K and 9K for European jewelry and XRF custom purity for exact readings.
Weight unit flexibility. Grams, pennyweights, and troy ounces. You'll encounter all three depending on whether you're buying from the public, a jeweler, or a dealer.
Buy rate control. The app should let you set your buy rate (the percentage of melt value you're willing to pay) so you can see your offer price and margin instantly.
Speed. You're using this in the field. It needs to load fast, calculate fast, and not get in your way.
Everything beyond these basics — inventory, receipts, deal scoring, portfolio tracking — is where the apps start to separate themselves.
The Apps: What's Out There in 2026
Basic Web Calculators
There are dozens of free gold calculators on the web — sites like GoldCalc.com, DenverGoldAndSilver.com, and various precious metals dealer sites. They all do the same thing: enter weight, select karat, see melt value.
What's good: Free, no sign-up, works in any browser.
What's missing: No buy rate controls. No way to save deals. No inventory tracking. Most use delayed spot prices (15–20 minutes behind). You have to manually check and re-enter spot price if you want accuracy. There's no deal history, no receipts, no way to track your buying over time.
Best for: Someone who buys scrap gold once or twice a year and just needs a quick melt value number. Not practical for regular buyers.
GoldFolio
GoldFolio (goldfolio.app) is a portfolio tracker for physical precious metals. It has native iOS and Android apps with a clean interface focused on tracking what you own — gold, silver, platinum, palladium, and copper.
What's good: Clean design. Active development. Blog with educational content. Supports multiple metals. Good for tracking portfolio value over time.
What's missing: GoldFolio is a portfolio tracker, not a buying tool. There's no scrap gold calculator with karat-level entry. No buy rate. No deal gauge. No receipt generation. No marketplace scanning. No technical analysis or strategy tools. If you're an active buyer evaluating deals in the field, GoldFolio doesn't have the workflow tools you need — it's built for people who want to track holdings they've already acquired.
Best for: Passive holders who want to see their total portfolio value and allocation. If you buy occasionally and mainly want to track what you own, GoldFolio does that well.
Precious Metal Calculator Apps (Various)
Several standalone calculator apps exist on iOS and Android — apps like "Gold Price Calculator," "Scrap Gold Calculator," and similar names. Most were built years ago and receive minimal updates.
What's good: Usually free or very cheap. Simple interface. Get the basic math done.
What's missing: Many use delayed price feeds or require manual spot price entry. No inventory management. No deal scoring. No cross-device sync. No receipt generation. Limited karat options. Some haven't been updated in years and have outdated interfaces or broken price feeds.
Best for: Casual buyers who want a free, no-frills calculator on their phone. Check the last update date before downloading — if it hasn't been updated in over a year, the price feed might be broken.
Nu Stack
Nu Stack (nustack.app) is a Progressive Web App — it runs in your browser on any device, so there's no app store download. Phone, tablet, laptop — same app, same data, synced in real time.
The calculator is the core of the app. It supports gold (8K through 24K) and silver (.800, .900, .925, .999), with XRF custom purity override for exact readings from an analyzer. Enter weight by karat, set your buy rate, and see melt value, buy price, margin, and refinery payout estimate instantly. Live spot prices refresh every 60 seconds.
The Deal Gauge is a visual indicator — think of it like a KBB-style arc that shows deal quality based on your margin. Green means strong, yellow means moderate, red means you're paying too much. It gives you an instant read on whether a deal is worth pursuing.
Beyond the calculator, Nu Stack includes inventory tracking, a profit dashboard, a seller CRM, decision logging, and receipt generation with signature capture and photo documentation — all in the free tier.
The Stacker tier ($4.99/mo) adds coin portfolio tracking, technical analysis with SMA/RSI/MACD indicators, price alerts, sell and ship management, and a refinery tracker. The Pro tier ($9.99/mo) adds the Treasure Hunter Chrome Extension — a marketplace scanner that overlays deal quality badges on listings across Facebook Marketplace, eBay, Craigslist, Whatnot, and Facebook Groups. Pro also includes a dealer map, AI coin identification (beta), bulk CSV/Excel import, and a weight assistant for Archimedes-method purity testing.
What's good: Full buying workflow — calculator, inventory, profit tracking, receipts, deal scoring — not just a number generator. Cross-device sync means you can log a deal on your phone at a pawn shop and review it on your laptop at home. The Chrome Extension is unique — no other precious metals app scans marketplaces for deals. Multi-currency support (USD, CAD, EUR, GBP, AUD, CHF, INR, JPY).
What's missing: No native iOS or Android app — it's browser-based. You add it to your home screen for a native-like experience, but it's not in the App Store or Play Store. This is intentional (no app store fees, instant updates, identical experience everywhere), but some users prefer a store download. The AI coin identification feature is still in beta.
Best for: Active scrap buyers, stackers, pawn shop owners, and dealers who buy regularly and want their calculator, inventory, deal scoring, and portfolio tracking in one place. Especially useful if you buy across multiple devices or multiple sources.
Feature Comparison Table
| Feature | Web Calculators | GoldFolio | Standalone Apps | Nu Stack |
|---|---|---|---|---|
| Melt value calculation | Yes | No (portfolio tracker) | Yes | Yes |
| Live spot price | Some (often delayed) | Yes | Varies | Yes (60s refresh) |
| Multi-karat support | Basic | N/A | Basic | Full (8K–24K + XRF) |
| Silver support | Some | Yes | Some | Yes (.800–.999) |
| Buy rate / margin | No | No | Rare | Yes |
| Deal quality scoring | No | No | No | Yes (Deal Gauge) |
| Inventory tracking | No | Portfolio only | No | Yes |
| Receipt generation | No | No | No | Yes (PDF + signature) |
| Cross-device sync | N/A (web) | Via app accounts | No | Yes (real-time) |
| Marketplace scanner | No | No | No | Yes (Chrome Extension) |
| Technical analysis | No | No | No | Yes (SMA, RSI, MACD) |
| Coin portfolio | No | Yes | No | Yes |
| AI coin ID | No | No | No | Yes (beta) |
| Price | Free | Free + Premium | Free / $1–5 | Free + $4.99–$9.99/mo |
| Platform | Browser | iOS, Android | iOS, Android | Any browser (PWA) |
Which One Should You Use?
If you buy scrap gold once or twice a year: A free web calculator is fine. Bookmark one that uses live spot prices and you're set.
If you track a metals portfolio but don't actively buy scrap: GoldFolio is purpose-built for that. Clean interface, good portfolio tracking, active development.
If you buy scrap regularly and need more than a calculator: Nu Stack covers the full workflow — calculate, evaluate, log, track, and analyze. The free tier gives you the calculator, inventory, profit dashboard, and receipts. If you're buying weekly or more, the Stacker or Pro tier adds tools that save real time.
If you're a dealer or power user running a scrap gold operation: Nu Stack Pro with the Chrome Extension is the most complete package available. No other tool scans five marketplaces for deals while also handling your calculator, inventory, and profit tracking.
The Bottom Line
The best scrap gold calculator app is the one you'll actually use in the field. If all you need is a quick melt value, keep it simple. But if you're buying regularly and want to track your deals, know your margins, and stop juggling spreadsheets and calculator apps and note-taking apps separately — an all-in-one tool saves time and reduces mistakes.
Try the calculators that interest you. Most are free to start. See which one fits the way you actually buy.