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
A Companion for SwiftUI
Discover SwiftUI like never before with Companion for SwiftUI—an interactive documentation hub covering all SwiftUI elements, whether you're developing for iOS, macOS, tvOS, or watchOS
$49.99 · In-app purchases
PRICE
$49.99
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'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 A Companion for SwiftUI: map the core Developer Tools 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 compatibility with popular tools like Xcode and Git.
Assumption to check: Limited integration with other tools and frameworks.
Validate with people who use this workflow before building.
Hypothesis 2
Build a community forum for users to share tips and resources.
Assumption to check: Lack of community support and resources.
Validate with people who use this workflow before building.
Hypothesis 3
Offer more affordable subscription tiers or trial periods.
Assumption to check: High cost for individual users.
Validate with people who use this workflow before building.
Hypothesis 4
Implement guided tutorials and tooltips for new users.
Assumption to check: Insufficient onboarding for new 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
Discover SwiftUI like never before with Companion for SwiftUI—an interactive documentation hub covering all SwiftUI elements, whether you're developing for iOS, macOS, tvOS, or watchOS. The latest update features the complete set of additions from WWDC 2024, bringing its repository to over 3300 entries. Here are some of its key features: • Comprehensive Coverage: Get in-depth insights into SwiftUI views, shapes, protocols, scenes, styles, property wrappers, and environment values across all Apple platforms (iOS, macOS, tvOS, and watchOS). • Interactive Examples: Dive into interactive examples that run within the app. Adjust associated controls to witness immediate changes in views and code, facilitating a better understanding of SwiftUI's power. • Seamless Integration: Copy and paste examples directly into Xcode for quick and easy execution. Examples are ready to run, making your development process smoother. • Filtering Options: Tailor your learning experience by creating filters to focus on relevant API areas, whether you're working on a legacy project, exploring the latest WWDC '23 additions, or researching SwiftUI's implementation of a specific framework. Switch between multiple tabs, each with its own filter. • Visual Learning: Need to grasp the finer details of a quad curve? No worries! Explore the .addQuadCurve() entry, and drag curve points to instantly visualize how function parameters change. Accelerate your learning curve with instant, hands-on knowledge. • Menu Bar Icon: Quickly find topics using the system's menu bar icon, allowing you to jump directly to the page you're looking for. This app is your indispensable companion, whether you're a seasoned developer or just starting your SwiftUI journey. Elevate your SwiftUI skills today!
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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
Zustand
react-native-gesture-handler
react-native-reanimated
expo-sharing
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.
