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
HTML/CSS/JS Editor
HTML Editor is a lightweight web code editing tool designed for mobile devices, allowing you to write, preview, and share HTML code anytime, anywhere.
$0.99 · In-app purchases
PRICE
$0.99
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included15 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 HTML/CSS/JS Editor: map the core Productivity 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
Add richer features like code completion and syntax highlighting.
Assumption to check: Limited features compared to desktop editors
Validate with people who use this workflow before building.
Hypothesis 2
Implement a collaborative editing feature.
Assumption to check: No real-time collaboration
Validate with people who use this workflow before building.
Hypothesis 3
Enhance the UI with modern design principles and animations.
Assumption to check: Basic UI/UX design
Validate with people who use this workflow before building.
Hypothesis 4
Provide comprehensive guides and tutorials within the app.
Assumption to check: Lack of documentation
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
HTML Editor is a lightweight web code editing tool designed for mobile devices, allowing you to write, preview, and share HTML code anytime, anywhere. Key Features Code Editing Supports HTML code with monospaced font editing experience. Built-in quick-insert buttons for common HTML tags including headings, layout, links, lists, and style tags to boost your coding efficiency. Live Preview Switch between editor and preview views to instantly see your HTML rendering results. Full-screen preview mode available for a better viewing experience. Beautiful Templates Multiple built-in templates including blank template, simple webpage template, Christmas card template, and business card template to jumpstart your creation. Convenient Operations Paste HTML code from clipboard, export HTML files with one tap and share easily. Open external HTML files for editing. Modern Design Features a modern UI design with light and dark mode support, smooth operation, and comfortable experience. Use Cases Frontend development learning and practice Quick creation of HTML email signatures Creating simple web greeting cards Testing and debugging HTML code snippets Recording and sharing code ideas on the go Whether you are a frontend developer, designer, or coding enthusiast, HTML Editor is your reliable companion for mobile web development.
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
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expo-router
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.
