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
Feeddler RSS Reader Pro
Feeddler was first released in 2010, a few days before the first-generation iPad release
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.1
106 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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What's included18 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 Feeddler RSS Reader Pro: 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 themes.
Assumption to check: Limited customization options for feeds
Validate with people who use this workflow before building.
Hypothesis 2
Implement better background syncing mechanisms.
Assumption to check: Inconsistent syncing of feeds
Validate with people who use this workflow before building.
Hypothesis 3
Introduce offline access for previously read articles.
Assumption to check: No offline reading capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Simplify UI and streamline user experience.
Assumption to check: Cluttered UI with too many options
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
Feeddler was first released in 2010, a few days before the first-generation iPad release. Feeddler has been one of the most popular RSS readers for iPhone and iPad and has been picked as a top news app by numerous media over the years. * "New and Noteworthy" and "What's Hot" - featured by Apple * "Cleanest and most user-friendly interface" - iPhone Life Magazine * "Essential iPad Apps" - Gizmodo * "10 Must Have iPad Apps" - Cool Tricks N Tips * ... and many more Feeddler is a fast and highly customizable RSS Reader client that stays perfect sync with RSS services and presents RSS stories in an easy-to-read interface. Feeddler is a universal app that supports iPhones, iPod touches, and iPads. Features: * Syncs with Bazqux Reader (optional account, 30-day free trial). * Syncs with FeedHQ (optional account, , 30-day free trial). * Syncs with Feedly (optional account, free). * Syncs with InoReader (optional account, free). * Syncs with The Old Reader (optional account, free). * Supports multiple accounts. * Supports feed management - add/delete/rename/sort subscriptions and folders. * Caches RSS articles and images for offline reading * Able to set up each subscription to open articles directly in RSS, full text mode, or web (online only). * Able to mark all items as read for any RSS subscription or mark only loaded items as read. * Able to mark items as read based on date or automatically mark items as read while user scrolling headlines. * Able to show only feeds/folders with unread items. * Swipe RSS articles for navigation, and pinch articles to change font size. * Save/Share articles by tapping-and-holding any articles shown on the preview list. * E-mail sharing with optional default recipients. * Copy-and-paste titles, links, or full articles. * Lots of UI customization options including summary preview and the comfortable night mode. More features in the Pro version: + Supports landscape mode on iPhone. + Supports keyword search to find and add feeds. + Sync all subscriptions, or sync subscriptions in a folder for offline reading. + Sync options: sync all feeds or unread items only, sync from last sync, days or weeks. For faster syncing, use "Unread only" + "FromLastSync." + No ads If you like Feeddler, please consider writing positive reviews on the App Store. We keep adding features, fixing bugs, and improving app performance. Please send us feedback at [email protected]. Thanks for your support.
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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
Zustand
Axios
React Navigation
Expo Secure Store
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.
