Track your precious metals stack. Your way.
Launch App • Beta • About • Changelog • Price API
A privacy-first portfolio tracker for Silver, Gold, Platinum, Palladium, Copper and Goldbacks. It runs entirely in your browser, and your data stays on your device.
| Collection Album | Collection Ledger |
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| Vendor Price Matrix | Metal Detail View |
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| Item View | Metal Ratios | Mobile |
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Release notes are in the Changelog and in the What's New panel in Settings.
Many precious metals apps ask for your email, store your data on their servers or lock features behind a paywall. StakTrakr does none of these:
- Client-side only. All data lives in your browser. The source is open, and the app runs from a single HTML file on
file://. - No data collection. There is no account, email or profile. Data leaves your device only when you turn on cloud backup.
- Works offline. Once loaded, the app runs without a connection. Live spot prices need one.
- Portable and free. Download the ZIP, open
index.htmland run it anywhere. MIT licensed.
Optional sponsorships pay for the free API infrastructure.
Spot prices for Silver, Gold, Platinum, Palladium and Copper come from several providers with automatic failover. The free, keyless api.staktrakr.com works out of the box, and anyone can query it: the StakTrakrApi repo lists every endpoint. Add Metals.dev, Metals-API, MetalPriceAPI, Gold API or a custom URL for more frequent updates. Manual mode prices items fully offline. Each spot card shows a sparkline, how current its price is and a ratio chip. Seed history goes back to 1968.
For retail, the Best Price Ticker shows the cheapest vendor for each coin, with a direct buy link. The Vendor Prices Matrix compares Gold, Silver, Platinum, Palladium and Goldbacks across major bullion dealers. It shows premium badges and links to each product page. Click a coin to open a TradingView chart of spot history with a price line per vendor and the period's Median, Low, High and Spread.
A Collection is a digital coin album over your inventory. Each Slot is one coin in the series, and you link the Item you own to fill it. Links live on the Collection, so your Items stay unchanged.
Series Templates for the American Silver Eagle (Type 1 and Type 2) ship with mintages, specifications and stock images. A Custom Collection starts blank or as a clone of a template. Add, insert and reorder Slots, set a mintage and note per Slot, and choose obverse and reverse title images by upload or URL. Image shapes are Round, Bar, Note and Slab, with portrait or landscape for Bars and Notes.
Each Collection opens as an Album or as a sortable Ledger with paid, melt, retail and gain or loss per owned Slot. Cost to Complete prices the missing Slots at the best current dealer price as a floor estimate. The Collections tab in Settings orders the hub and hides empty Collections.
Each item records Purchase Price, Melt and Retail, with Gain/Loss per item and across the portfolio. Sold, Traded, Lost, Gifted and Returned dispositions record realized gains and losses with full transaction history. A trade links the items on both sides and carries the cost basis across. Items switch between lot and each purchase. Weights in troy ounces, grams, milligrams, kilograms and pounds convert automatically.
Graded coins store year, grade, grading authority and cert number. Bars and notes store serial numbers. Every item can hold notes, photos (your own or from the Numista CDN), price history and a storage location. Goldbacks (¼ to 100) and Silverbacks use denomination-aware pricing. Constitutional silver (90%, 40% and 35%) leads with face value and prices the actual silver weight.
Click a metal total on the dashboard for its detail view: cost basis, melt, retail and realized gain. Its chart marks every acquisition and disposition, and the composition panels and Acquisitions ledger follow the chart range. Ratio chips open the Metal Ratios panel with Gold:Silver, Gold:Platinum, Gold:Palladium, Platinum:Palladium and Silver:Copper.
Four card styles are available: sparkline header, full-bleed image, split layout and accessible table. A sortable table view adds thumbnails and inline chip badges. Filter chips build themselves from your collection across 10 categories, such as Metal, Type, Year, Grade and Storage. You can group chips, save a search as a chip and hide chips with a right-click. Tags come from Numista (Bullion, Proof, Commemorative) or from you, and work with filters, rename and delete.
Numista search works by name, country or catalog number. Bulk sync pulls metadata and CDN images with a progress log. Regex rules match catalog IDs to your item names. PCGS lookup by number fills the form, and cert badges link to PCGS and NGC.
Each field records its origin: Numista, PCGS, CSV import or manual entry. A two-tier re-sync picker uses that origin to choose sensible defaults. The Item View Modal charts melt and retail price history over 1Y, 5Y, 10Y, Purchased or a custom range. It also shows Numista metadata, tags, the cert badge and disposition history.
Connect Dropbox through OAuth PKCE to sync an encrypted .stvault file across devices. Encryption uses AES-256-GCM with PBKDF2-SHA256 (600,000 iterations) through the Web Crypto API. The cloud provider receives only ciphertext.
Sync runs both ways and detects conflicts. The DiffModal shows item and settings changes, and you pick each field with a click. An encrypted image vault syncs photos, and item price history syncs with the inventory. Leader election across tabs prevents concurrent sync runs. Sync also supports several accounts and keeps a configurable number of restorable backups before each overwrite.
CSV import maps fields automatically, accepts regex rules and offers merge or override modes with a DiffModal preview. Export writes CSV, JSON, PDF or a full ZIP backup. Encrypted .stvault exports show a password strength meter. Spot history moves between instances by import and export.
Clone an item inline with Save & Clone Another. Bulk Edit in Settings → Inventory edits 16 fields across many items at once. It also copies and deletes in bulk, and fills fields from a Numista lookup.
Settings groups every option behind a sidebar. Its tabs are About, Appearance, Inventory, Filters, Images, Collections, Currency, Market, Storage, API, Cloud, Log and FAQ. The Log tab keeps the full change history with undo and redo.
The app also installs as a PWA and converts between 17 currencies at live exchange rates. Search matches fuzzily across all fields. Shift+click or long-press edits a value inline. Dates follow your timezone, and the disposed filter has three states. Non-production domains show a BETA, PREVIEW or LOCAL badge.
Open www.staktrakr.com for the hosted version. To run it locally, download a release ZIP, extract it and open index.html in a modern browser. No server is required. For development, run python3 -m http.server 8000.
StakTrakr ships with labeled sample inventory and years of spot history, so every feature works on first launch.
Two optional integrations add catalog data. A free Numista API key enables catalog search, images and metadata sync. A free PCGS API key enables PCGS lookup and cert verification. Configure both in Settings → API.
- No server-side component. The developer has no technical means to access your data.
- No cookies, tracking SDKs or advertising. Your data lives only in localStorage and IndexedDB.
- Zero-knowledge cloud backup. AES-256-GCM with PBKDF2-SHA256 (600,000 iterations); the cloud provider receives only ciphertext.
- Browser storage can be cleared. Export a ZIP or vault backup regularly, especially on iOS Safari.
- The hosted site runs Cloudflare Web Analytics: aggregated, anonymous page views only. A local copy has no analytics.
The Privacy Policy and the FAQ tab in Settings hold the details.
| Layer | Technology |
|---|---|
| Runtime | Client-side JavaScript (no framework, no build step) |
| Storage | Browser localStorage + IndexedDB |
| Encryption | Web Crypto API: AES-256-GCM via PBKDF2 |
| Styling | Vanilla CSS with CSS custom properties (oklch token system), four themes |
| Charts | Chart.js 3.9.1 + TradingView Lightweight Charts |
| CSV / PDF / ZIP | PapaParse 5.4.1, jsPDF 2.5.1 + AutoTable 3.5.25, JSZip 3.10.1 |
| Hosting | Cloudflare Pages |
| Spot API | api.staktrakr.com (free, keyless) + Metals.dev, Metals-API, MetalPriceAPI, Gold API, custom |
| Market API | api.staktrakr.com v2 (free, keyless): retail prices from major bullion dealers |
| Catalog | Numista API, PCGS CoinFacts |
| Exchange Rates | Open Exchange Rates |
| Security tooling | Codacy (A+), CodeQL, Semgrep, PMD, ESLint |
Bug reports and pull requests are welcome. Open an issue before you start a large change. The app stays a zero-install, single-page, vanilla JS application: no build step, no framework, and it runs on file://. Development tooling lives in devops/.
MIT License. See LICENSE.
- Reddit: r/staktrakr
- Issues: GitHub Issues
- Sponsor: GitHub Sponsors