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
DevTutor: Learn Swift, SwiftUl
"DevTutor" is an application designed to assist developers in creating exceptional apps using SwiftUI
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
2 ratings · Top 5%
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.
First kit free with a verified email
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Combine features and design from your favorite apps.
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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/
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 DevTutor: Learn Swift, SwiftUl: 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
Incorporate quizzes and coding challenges within tutorials to enhance engagement.
Assumption to check: Limited interactivity in tutorials
Validate with people who use this workflow before building.
Hypothesis 2
Implement user-driven content recommendations based on completed tutorials.
Assumption to check: Lack of personalized learning paths
Validate with people who use this workflow before building.
Hypothesis 3
Add a forum or chat feature for learners to discuss topics.
Assumption to check: No community features
Validate with people who use this workflow before building.
Hypothesis 4
Enhance UI with modern design patterns and animations for a better user experience.
Assumption to check: Basic UI design
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
"DevTutor" is an application designed to assist developers in creating exceptional apps using SwiftUI. It offers replicable code samples and corresponding UI previews to streamline your coding process. Additionally, it includes local offline access to the official Swift Programming Language documentation in both Chinese and English. ——————————— ◈ Main Features ◈ ——————————— ■ Provide sample code that can be used directly in your project ■ View in real time how your code affects the appearance of the application ■ Provide official bilingual Chinese and English Swift programming language documentation for offline use ■ Explore a collection of third-party packages ■ And more features... ——————————— ◈ Policies & Terms ◈ ——————————— For Privacy Policy, please visit: https://wangchujiang.com/devtutor/privacy-policy.html For Terms of Service, please visit: https://wangchujiang.com/devtutor/terms-of-service.html ——————————— ◈ Contact Me ◈ ——————————— Contact us at [email protected] if you have any problems or questions.
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
Zustand
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react-navigation
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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.
