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
Fortune Watch
Fortune Widget is based on the classic pseudorandom fortune message application that was popular on Unix systems
$1.49 · In-app purchases
PRICE
$1.49
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
5 ratings · Top 30%
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 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.
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 Fortune Watch: map the core Entertainment 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 the variety of fortune styles and methods offered.
Assumption to check: Limited fortune styles available
Validate with people who use this workflow before building.
Hypothesis 2
Implement social sharing features for a more engaging experience.
Assumption to check: Lack of social features for sharing fortunes
Validate with people who use this workflow before building.
Hypothesis 3
Add offline access for previously fetched fortunes.
Assumption to check: No offline access to daily fortunes
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the in-app purchase process and provide clear value propositions.
Assumption to check: In-app purchases may confuse users
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
Fortune Widget is based on the classic pseudorandom fortune message application that was popular on Unix systems. Designed for widgets and Apple Watch, Fortune offers over 10,000 random fortunes covering categories ranging from sci-fi to literature to sports with quotes from classic TV shows and comics of that era. Features * Get fortunes on your Apple Watch! * See fortunes on your iPhone and iPad! * Add widgets to your home screen! * Over 10,000 fortunes! * Over 29 different lists! * Choose from green screen, amber or modern text color! * Choose which lists to show fortunes from! * Show only short fortunes for a quicker read! * Simple interface - just tap to get a new fortune! * Based on the most popular version written by Ken Arnold This one's for you Dave :-)
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 Navigation
Axios
React Native Share
Async Storage
Expo
TypeScript
BUILD KIT DIFFICULTY
Starter
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.
