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 Viewer : Editor & Creator
The HTML viewer and editor for iPhone and iPad
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
101 ratings · Top 15%
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 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 HTML Viewer : Editor & Creator: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
The HTML viewer and editor for iPhone and iPad. Write, preview and debug HTML, CSS and JavaScript, sync your projects with iCloud and edit files right on your server. No computer needed. Type and watch your page update live, test it on phone, tablet and desktop sizes, then fix problems with real DevTools and one-tap tools. FREE FOR EVERYONE • Code editor with syntax highlighting • Live preview, side by side with your code in Split view • 3 projects, plus any file you open from Files or share from another app • 80+ templates: full-screen games, daily-life mini apps and websites • Favorites and tags to keep your projects organised • Your Activity: your whole year of coding at a glance • Open URL: load any website, view its source and save it as a project • Learn: a free HTML, CSS and JavaScript course in every app language, with quizzes, challenges, a certificate and an optional daily reminder • Try autocomplete, code formatting and find & replace for free • 20+ everyday tools: colour picker, contrast checker, QR codes, regex tester and more • Light and dark editor themes and 10 fonts • Widgets, Siri, Shortcuts, Spotlight and Control Center • No ads GO PRO FOR THE FULL TOOLKIT • Unlimited projects and tabs, with the Files sidebar for every file in a project • Open a folder from Files and edit it in place • Sync projects between iPhone and iPad with iCloud • A built-in SSH terminal, plus SFTP and FTP to edit files on your server • Console, Network, Elements and Storage DevTools for your page or any website • Autocomplete for tags, classes, CSS properties and file paths, plus the full symbol row • Format code exactly the way you like it • Line numbers, page guide and other editor display options • Device frames: iPhone, iPad and desktop sizes • 50 tools: SEO, accessibility and performance audits with one-tap fixes, Colour Studio, Image Studio with background removal • Local Web Server: open your page on any device on your Wi-Fi with a QR code • Export as ZIP, PDF or a single file, and share your projects • Every theme and font, and new app icons to choose from MADE FOR iPHONE AND iPAD • iPad layout with a tab bar, project grid and keyboard shortcuts • Made for iPhone Duo, folded or open • Run your page full screen, with a Focus mode that hides everything else • Customise the editor, keyboard, preview and more in Settings • Preview Markdown and JSON as well as HTML • Archive keeps deleted files for 30 days • Editing and preview work offline • Available in 33 languages WHO IT'S FOR Students learning to code, hobbyists building small sites and games, and developers who need to fix a page or a server file away from their desk. PRO PLANS Choose an auto-renewing subscription or a one-time Lifetime purchase. A free trial may be available on subscriptions for new subscribers. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Payment is charged to your Apple ID at confirmation of purchase. Lifetime is a single payment with no renewal. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://attractive-basket-ce6.notion.site/Privacy-Policy-Html-Editor-30d5cd442d3280b49b72e9a2436c853e
Written user reviews are not shown here. Check current App Store reviews >
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
Offer a broader range of customizable templates.
Assumption to check: Limited templates for beginners
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to share projects for collaborative editing.
Assumption to check: No collaboration features
Validate with people who use this workflow before building.
Hypothesis 3
Implement version history to track changes.
Assumption to check: Lack of version control
Validate with people who use this workflow before building.
Hypothesis 4
Enable exporting projects in various formats (HTML, PDF, etc.).
Assumption to check: Limited export options
Validate with people who use this workflow before building.
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.
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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.
