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
The Motley Fool
Introducing the official Motley Fool US mobile app.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 2.8
47 ratings · Below Average
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.
Build your own version
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 included17 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 The Motley Fool: 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
Introducing the official Motley Fool US mobile app. Stay on top of the latest stock rankings, recommendations, news and analysis from The Motley Fool with our app. Designed for, but not limited to, our US premium subscribers, the mobile app provides instant notification of: - Motley Fool coverage of stocks in your portfolios. - The latest rankings and new stock recommendations from your Motley Fool services. - New analysis and commentary from our analysts for all your Motley Fool services. Be the first to know the latest thinking and guidance from The Motley Fool. The Motley Fool app has a rich experience designed for your mobile device and contains a suite of features, including: - A dashboard summary of stocks you’re following and your Motley Fool services. - See the latest stock rankings and recommendations across your Motley Fool services. - Detailed information about the stocks you’re following with My Portfolios. - Either be selective and customize notifications to get alerts for specific stocks and services, or get the firehose and get notified about everything we do, it’s up to you! - Quick and easy navigation of your Motley Fool services. - A layout designed specifically for fast and clean reading on mobile. - Look up any stock to get our latest coverage and sentiment about the company. Download now and receive updates as we continue to make improvements and add features in the future. All subscription and purchases through the app are subject to the standard Apple End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Written user reviews are not shown here. Check current App Store reviews >
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
Provide more detailed analysis and recommendations.
Assumption to check: Lack of depth in stock analysis
Validate with people who use this workflow before building.
Hypothesis 2
Add community features like comments or forums.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 3
Focus on stability and performance optimization.
Assumption to check: Frequent crashes and bugs
Validate with people who use this workflow before building.
Hypothesis 4
Implement clear subscription benefits and transparency.
Assumption to check: Unclear monetization model
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
Axios
Zustand
React Navigation
React Native Reanimated
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.
