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
Handbook for Swift
Provide documentation for SwiftUI, Swift Charts, SwiftData, visionOS, XcodeKit, Swift, The Swift Programming Language, etc.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included14 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.
JavaScript is required to complete mailbox verification.
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 Handbook for Swift: 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.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Implement a review and rating system to gather user feedback.
Assumption to check: Lack of user reviews and feedback can lead to uncertainty in app quality.
Validate with people who use this workflow before building.
Hypothesis 2
Regularly update and expand tutorial content with community contributions.
Assumption to check: Limited content variety in tutorials may hinder learning.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear explanations for premium features and benefits.
Assumption to check: In-app purchases may confuse users if not clearly communicated.
Validate with people who use this workflow before building.
Hypothesis 4
Add quizzes or coding challenges to enhance user interaction and retention.
Assumption to check: User engagement may drop without interactive features.
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
Provide documentation for SwiftUI, Swift Charts, SwiftData, visionOS, XcodeKit, Swift, The Swift Programming Language, etc. [Core Features] 1. Multilingual Support: Covers major languages worldwide to meet the needs of diverse users. English, العربية, Català, 繁體中文（香港）, 简体中文, 繁體中文, Hrvatski, Čeština, Dansk, Nederlands, English (Australia), English (India), English (UK), Suomi, Français, Français (Canada), Deutsch, Ελληνικά, עברית, हिन्दी, Magyar, Bahasa Indonesia, Italiano, 日本語, 한국어, Bahasa Melayu, Norsk bokmål, Polski, Português (Brasil), Português (Portugal), Română, Русский, Slovenčina, Español, Español (Latinoamérica), Svenska, ไทย, Türkçe, Українська, Tiếng Việt ...(70+ languages) 2. Efficient Filtering and Navigation: Quickly locate the documentation you need by module, document type, API status, operating system, and code snippets. 3. Localized Search: Search in your own language for more direct access to information. 4. Personalized Tutorials: Provides a beginner-friendly Swift learning path suitable for developers of all levels. 5. Document Export: Export documentation to Markdown format for easy sharing. 6. Notes Feature: Supports iCloud note synchronization to keep your notes secure and private. Our goal is to simplify your learning process, making Swift development easier than ever before. [Professional Version] - Weekly Plan: Use all professional features for a week - Monthly Plan: Use all professional features for a month - Annual Plan: Use all professional features for a year - Lifetime Use: One-time payment for lifetime use - More Filters and Local Language Search: Unlock useful features. User Agreement: https://tapfeng.com/user-agreement/ Privacy Policy: https://tapfeng.com/privacy-policy/ [Contact and Feedback] For any questions or suggestions about the product, feel free to contact us: Email: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
react-navigation
Zustand
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.
