Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Precious Metals Pro
Precious Metals Pro — Track Silver, Gold, Platinum & Palladium
$2.99
PRICE
$2.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Precious Metals Pro: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Precious Metals Pro — Track Silver, Gold, Platinum & Palladium From the creators of Silver Stacker Wallet — Precious Metals Pro is built by stackers, for stackers who want more. Track your Silver, Gold, Platinum, and Palladium coins, bars, rounds, and jewelry all in one place. Every spot price, weight, and value can be entered and adjusted manually — no internet required. Or connect anytime and tap Refresh Prices to instantly load live spot prices for all your active metals. Having both means you're never locked out — whether you're at a coin show with no signal, on a plane, or at home watching the market move, Precious Metals Pro works exactly the way you need it to. WHY YOU'LL LOVE IT • Live spot price refresh — instantly load current Silver, Gold, Platinum, and Palladium prices from our secure backend feed • Stock ticker style price cards with colored metal banners, large bold prices, and green/red change arrows showing movement since the last update • Set Price Manually odometer on every card — perfect for adjusting to dealer premiums, coin show prices, or melt value negotiations • Track coins, bars, rounds, and jewelry — sterling silver, gold jewelry, and scrap metal all work using the grams entry mode with your item's purity • The best of both worlds — live data when connected, full manual control when you're not • Clear offline indicator shows when no connection is available • Add metals individually — only see the ones you actually track • Silver odometer supports prices up to $9,999.99; Gold, Platinum, and Palladium up to $99,999.99 • Wallet banner shows active metal spot prices in rows of two for quick reference • Combined and per-metal breakdown of total weight and value • Instant toggle between troy oz and grams • Swipe left to reorder or delete spot price cards and wallet items BUILT FOR REAL STACKERS Enter the purity and weight for any coin, bar, round, or piece of jewelry, and Precious Metals Pro calculates pure metal content and current value automatically. Built-in reference examples cover American Silver Eagles, Morgan Dollars, American Gold Eagles and Buffalos, sterling silver jewelry, and gold jewelry by karat — so you always know exactly what to enter. YOUR DATA STAYS YOURS All wallet data is stored exclusively on your device. Precious Metals Pro only connects to the internet when you explicitly tap Refresh Prices to pull current spot prices — nothing else is ever transmitted. Stack smarter. Track better. Trade confidently.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Incorporate user forums or news commentary sections.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set multiple price thresholds for alerts.
Assumption to check: Lack of customization for alerts
Validate with people who use this workflow before building.
Hypothesis 3
Enable sharing price updates and alerts on social media.
Assumption to check: No social sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Implement an interactive tutorial for new users.
Assumption to check: Poor onboarding experience
Validate with people who use this workflow before building.
Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Victory Native
Axios
React Navigation
BUILD KIT DIFFICULTY
Intermediate
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
