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
My Crypto - Widget & Chart
the easiest way to manage your crypto portfolio and stay on top of your investments!
$1.99 · In-app purchases
PRICE
$1.99
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 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.
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 My Crypto - Widget & Chart: 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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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
Expand supported cryptocurrencies and integrate additional exchanges.
Assumption to check: Limited cryptocurrency options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Add portfolio tracking, alerts for price changes, and news updates.
Assumption to check: Poor user reviews due to lack of features
Validate with people who use this workflow before building.
Hypothesis 3
Simplify settings layout and provide tooltips for each option.
Assumption to check: Difficult to navigate settings
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize widgets for personal preferences and layouts.
Assumption to check: No widget customization options
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
the easiest way to manage your crypto portfolio and stay on top of your investments! keep track of your bitcoin, ethereum, ripple, and many other cryptocurrencies anytime, anywhere. with our app, you can effortlessly manage your coins, analyze price trends, and track your profits in real-time – all in a sleek and user-friendly design. features: • live portfolio management: enter the number of your coins, select your preferred currency, and the app will instantly display your current profit and the latest prices. • create and manage multiple crypto accounts: stay organized and oversee all your wallets and assets in one place. • detailed charts: analyze your coins with daily, monthly, and yearly charts to make informed decisions. • widgets for quick access: your most important data is always at your fingertips, right on the home or notification screen. • multi-currency support: seamlessly switch between usd, eur, gbp, cny, and other major currencies. • simple and modern design: a focus on usability and efficiency – without unnecessary distractions. • no annoying ads: focus on your investments without interruptions. new and coming soon: • notifications for price changes: get instant alerts when the market moves. • support for more cryptocurrencies: we’re adding even more coins to help you track all your favorite assets. why this app? this app is the perfect tool to simplify your crypto journey and help you invest smarter and more efficiently. try it now and stay informed – whether you’re a beginner or an expert!
Written user reviews are not shown here. Check current App Store reviews >
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
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.
