App Overview

Coin Value Checker: Appraisal icon

Coin Value Checker: Appraisal

VISIGEN PTE. LTD. · Reference

coin value checker: appraisal

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.5
516 ratings · Top 15%

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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A product spec, screen plans, and build steps for your coding agent.

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What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Coin Value Checker: Appraisal: 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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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

Enhance the database with more coins and detailed appraisals.

Assumption to check: Limited coin database, may not include all coins

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the paywall experience with clearer explanations.

Assumption to check: In-app purchase process can be confusing

Validate with people who use this workflow before building.

Hypothesis 3

Add features for users to customize their favorite coins and notifications.

Assumption to check: Lack of user customization options

Validate with people who use this workflow before building.

Hypothesis 4

Provide more comprehensive historical data and trends for better user insights.

Assumption to check: Limited historical data and analytics

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

coin value checker: appraisal discover the true value of your coin collection with the most comprehensive coin appraisal app available. whether you're a seasoned numismatist or just starting your collection journey, coin value checker makes it easy to identify, evaluate, and track your coins. key features: • instant coin recognition - simply snap a photo and our advanced ai technology identifies your coin in seconds • real-time market values - get up-to-date pricing based on current market conditions and coin grade • extensive database - complete catalog of us coins including pennies, nickels, dimes, quarters, half dollars, dollars, and special commemorative editions from colonial times to present • grade estimation - our smart grading assistant helps you determine coin condition from poor to mint state • collection management - organize and track your entire collection with detailed records and total portfolio value • price history charts - view historical price trends to make informed buying and selling decisions perfect for: • coin collectors of all levels • estate sale hunters and antique dealers • anyone who inherited a coin collection • history and numismatics enthusiasts why choose coin value checker: our app combines cutting-edge image recognition technology with comprehensive numismatic data to give you professional-grade appraisals at your fingertips. no more guessing or searching through heavy catalogs - get accurate values instantly. start building and managing your coin collection like a pro. download coin value checker today and unlock the hidden value in your coins! note: values provided are estimates based on market data. for official appraisals, please consult a certified numismatist. about coin value checker: appraisal premium -subscription name: premium yearly plan (yearly with trial) -subscription duration: 1 year (3 days trial) -subscription description: unlimited coin identification, value check -subscription name: premium weekly plan (weekly with trial) -subscription duration: 1 week (3 days trial) -subscription description: unlimited coin identification, value check • payment will be charged to itunes account at confirmation of purchase • subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period • the account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal • any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable • subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's account settings after purchase please note that end user license agreement, terms and conditions, privacy policy, apply. end user license agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ terms of use: https://www.coinvaluechecker.com/terms-of-service/ privacy policy: https://www.coinvaluechecker.com/app-privacy-policy/ contact us: [email protected]

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Screenshots

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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
Axios
Victory Native
React Navigation
Zustand
BUILD KIT DIFFICULTY
Advanced

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.