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
Corvus RSS Reader for Safari
Corvus RSS Reader is a privacy-first RSS and Atom feed reader built natively for Safari on macOS, iOS, and iPadOS
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
1 ratings · Top 30%
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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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 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 Corvus RSS Reader for Safari: 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 customize feed layouts and sorting.
Assumption to check: Limited feed customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline storage for saved articles.
Assumption to check: No offline access to saved articles
Validate with people who use this workflow before building.
Hypothesis 3
Add a discovery page for trending feeds or categories.
Assumption to check: Lack of discovery features for new feeds
Validate with people who use this workflow before building.
Hypothesis 4
Integrate text-to-speech for article reading.
Assumption to check: No text-to-speech functionality
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
Corvus RSS Reader is a privacy-first RSS and Atom feed reader built natively for Safari on macOS, iOS, and iPadOS. Subscribe to your favorite websites, YouTube channels, and blogs, and read everything in one clean, distraction-free interface. FEATURES - RSS & Atom Feeds, Subscribe to any website that publishes a feed. Corvus auto-discovers feeds on the page you're visiting. - Discover Feeds, Browse a curated directory of 450+ feeds across 34 categories. Find popular feeds from 47 countries, or explore the full international catalog. - YouTube Channels, Subscribe to any YouTube channel directly from its page. Handles and custom URLs are resolved automatically. - Folder Organization, Group feeds into folders and nested sub-folders. Keep Tech, News, YouTube, and Design neatly separated. - 5 View Modes, Magazine, list, card, expanded, and full-view layouts. Choose the reading experience that works best for you. - Star, Pin & Read Later, Save articles for later, star your favorites, and pin important items. Built-in smart feeds for quick access. - Keyboard Shortcuts, Navigate, star, refresh, and manage articles entirely from the keyboard. J/K to browse, S to star, V to open, and more. - Full-Text Search, Search across all your articles by title, content, or author. Find anything instantly, even in thousands of articles. - Themes & Customization, Light, dark, and auto themes. Customizable accent colors, font sizes, density settings, and newspaper-style column layouts. - Tags & Smart Filters, Organize articles with custom tags and create smart filters that automatically group content by your rules. - OPML Import & Export, Bring your subscriptions from any other reader, or export them at any time. Your data is always portable. - Feed Health Dashboard, Monitor the health of your subscriptions. See which feeds are active, broken, or slow to update. - 33 Languages, Fully localized in English, Spanish (Spain and Mexico), French, German, Japanese, Korean, Portuguese (Brazil and Portugal), Chinese (Simplified and Traditional), Arabic, Czech, Danish, Dutch, Finnish, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Malay, Norwegian, Polish, Romanian, Russian, Slovak, Swedish, Thai, Turkish, Ukrainian, and Vietnamese. PRIVACY FIRST No account required. No sign-ups, no cloud sync, no tracking. Your feeds and articles live entirely on your device. Corvus RSS Reader collects zero data. BUILT FOR SAFARI Corvus RSS Reader is not a Chrome extension ported to Safari. It is built specifically for Safari with native performance, no background processes, and zero data collection. Works on Mac, iPhone, and iPad.
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
Supabase
react-native-push-notification
expo-speech
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.
