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
Den for RSS
Create landscape views of what's happening with a modern, no-nonsense, news aggregator.
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
5 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's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 Den for RSS: map the core News 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
Allow users to create their own categories and organize feeds better.
Assumption to check: Limited customization options for RSS feeds
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline reading feature for saved articles.
Assumption to check: No offline reading capability
Validate with people who use this workflow before building.
Hypothesis 3
Add a feed discovery feature with recommendations based on user interests.
Assumption to check: Difficult to discover new feeds
Validate with people who use this workflow before building.
Hypothesis 4
Integrate text-to-speech for article content for accessibility.
Assumption to check: Lack of text-to-speech 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
Create landscape views of what's happening with a modern, no-nonsense, news aggregator. Den is designed for those who value simplicity and functionality in a news app. With an intuitive, native interface and broadsheet layouts, Den stands apart by showcasing more content—especially on larger screens—making it easy to stay on top of the news that matters to you. Effortlessly discover interesting articles, compare sources, and spot trends all in one place. KEY FEATURES + Cloud Sync Seamlessly access your feeds, history, and settings across all your devices—no extra account required. + Wide Format Support Den supports RSS, Atom, and JSON feeds, ensuring compatibility with most sources. + Import & Export Easily back up and restore your feeds using standard OPML files. + Reader Mode Eliminate distractions with clutter-free article views for a streamlined reading experience. + Trending Topics Discover trending news and subjects, surfaced through powerful natural language processing. + Bookmarks Save articles to read later and never lose track of what caught your eye. + Search Functionality Stay up to date by searching for the latest news on specific topics or keywords. + Feed Organizer Manage your feed settings in bulk with ease. + Blocklists Enjoy an ad-free experience by blocking ads and other unwanted content. + Web Extension Automatically discover feeds as you browse the web. + Widgets Stay updated right from your home screen by displaying the latest news from your inbox, a folder, or a specific feed.
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.
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BUILD KIT DIFFICULTY
Advanced
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.
