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 Runner: Live Preview
HTML Runner lets you instantly open, edit and run HTML projects directly on your iPhone and iPad.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.8
4 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.
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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 included16 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 Runner: Live Preview: 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 formatting tools to provide more options.
Assumption to check: Limited code formatting options and features.
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time collaboration capabilities.
Assumption to check: No collaboration features for multiple users.
Validate with people who use this workflow before building.
Hypothesis 3
Allow deeper customization of the editor and preview settings.
Assumption to check: Basic user settings with minimal customization.
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 Runner lets you instantly open, edit and run HTML projects directly on your iPhone and iPad. Built for the new AI coding workflow. Generate webpages with AI tools, paste the code into a project, and preview it instantly inside the app. No server setup. No desktop required. No complicated IDE. Just paste your code and run. Perfect for: • AI-generated websites • HTML/CSS/JS testing • Webpage preview • Frontend demos • Learning web development • Offline HTML viewing Key Features Live HTML Preview Run webpages instantly with the built-in browser. Project Workspace Organize files with folders and multi-file project support. HTML, CSS & JavaScript Support Create and edit complete web projects directly on mobile. Code Formatting Automatically format and clean up your code. Import Local Files Open and manage HTML-related files easily. Offline Ready Preview local webpages without deployment or internet access. Made for Beginners Simple and lightweight workflow for users who want to run AI-generated code. Whether you're previewing AI-generated websites, testing frontend ideas, or learning web development, HTML Runner gives you the fastest way to run web projects on mobile. Subscription Info: Subscriptions auto-renew unless turned off at least 24 hours before the end of the period. Renewal fees will be charged within 24 hours before the period ends. Manage or cancel subscriptions in your App Store account settings. Support & Feedback: Email: [email protected] User Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://outgoing-cheese-e3b.notion.site/Keyword-Highlighter-2b2b209c98f980e7b250c3bc0e6b6546Subscription Info: Subscriptions auto-renew unless turned off at least 24 hours before the end of the period. Renewal fees will be charged within 24 hours before the period ends. Manage or cancel subscriptions in your App Store account settings. Support & Feedback: Email: [email protected] User Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://outgoing-cheese-e3b.notion.site/Html-Studio-36cb209c98f9808aad51db25979e06da
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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
React Navigation
Zustand
expo-webview
@react-native-clipboard/clipboard
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.
