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
Redjo - M3U Playlist Player
Redjo is a powerful, lightweight M3U playlist player designed specifically for iOS
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.0
4 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 included16 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 Redjo - M3U Playlist Player: map the core Utilities 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 playlist features, allowing better organization and editing.
Assumption to check: Limited playlist management features
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search filters for better user experience.
Assumption to check: Search functionality lacks filters
Validate with people who use this workflow before building.
Hypothesis 3
Add iCloud sync for playlists and history.
Assumption to check: No cloud syncing
Validate with people who use this workflow before building.
Hypothesis 4
Improve UI design for a more modern look and feel.
Assumption to check: User interface is basic
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
Redjo is a powerful, lightweight M3U playlist player designed specifically for iOS. It provides a clean, modern interface for you to organize and stream your favorite content. Whether it's live television, movies, or series, Redjo makes it easy to enjoy your media on the go. Key Features: - Bring Your Own Content (BYOC): Redjo is a player tool and does not come with any pre-loaded content. Simply add your own M3U playlist URL to start watching. - Native iOS Video Player: Optimized for performance and battery life using the native iOS AVPlayer framework. - Similar Channel Recommendations: Discover more of what you love with intelligent channel grouping and recommendations. - Full-Screen Immersion: Enjoy a truly immersive viewing experience with landscape orientation support and auto-hiding controls. - Simple & Intuitive: A user-friendly design that focuses on what matters most your content. Important Note: Redjo does not provide, host, or link to any streaming content. We do not endorse the streaming of copyright-protected material without permission of the copyright holder. Users must provide their own content via M3U playlist URLs found on the web. Download Redjo today and take control of your media experience.
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
React Navigation
axios
AsyncStorage
react-native-reanimated
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.
