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.
With an extensive database of over 92,000 coin types, 99% identification accuracy, and AI-powered technology, CoinValue stands as the essential tool for coin enthusiasts worldwide
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for CoinValue:Coin Identifier: map the core Reference workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Limited coin information compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchases not clearly explained
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Search functionality could be more robust
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
With an extensive database of over 92,000 coin types, 99% identification accuracy, and AI-powered technology, CoinValue stands as the essential tool for coin enthusiasts worldwide. Whether you're identifying error coins, evaluating rare specimens, or managing your collection, CoinValue streamlines the entire process—making numismatics effortless and enjoyable. Core Features 1. Rapid & Accurate Coin Identification - Instantly recognize coin details by simply taking a photo or uploading an image - Comprehensive coverage of over 92,000 global coin types with 99% precision - Eliminates tedious manual comparison processes for efficient authentication 2. Professional Coin Analysis Reports - Multi-dimensional evaluations including rarity grading and real-time market valuations - Detailed historical context and background information for informed collecting decisions - Data sourced from authoritative numismatic databases ensuring reliability 3. Collection Management System - Create personalized collections organized by series, era, or value - Secure access to your collection data anytime, anywhere Why Choose CoinValue? - Lightning-Fast Identification: AI-powered precision delivers results in seconds - Global Coin Coverage: Extensive international database puts rare specimens at your fingertips - All-in-One Solution: From authentication to valuation and collection management—everything you need in one intuitive platform Note: After confirming your purchase, payment will be charged to your iTunes Account. - Unless you turn off auto-renew at least 24 hours before the end of the current subscription period, your subscription will automatically renew. - Your account will be charged for renewal within 24 hours prior to the end of the current subscription period, and the renewal cost will be displayed. - You can manage your subscription and turn off auto-renewal at any time by accessing your iTunes Account settings after purchase. - If you have a free trial, any unused portion will be forfeited upon purchase of a subscription. - To avoid being charged, cancel your subscription or free trial at least 24 hours before it ends by turning off auto-renewal in your iTunes settings. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free version. Your subscription is subject to our Terms of Use and Privacy Policy: - Terms of Use: https://sites.google.com/view/coinvalue-terms-of-use/%E9%A6%96%E9%A1%B5 - Privacy Policy: https://sites.google.com/view/coinvalue-privacy-policy/%E9%A6%96%E9%A1%B5 If you have any questions, please contact us at: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.