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
Red Dead Redemption
When federal agents threaten his family, former outlaw John Marston is forced to hunt down the gang of criminals he once called friends
$39.99 · In-app purchases
PRICE
$39.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
228 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/
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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 Red Dead Redemption: map the core Games 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
Offer a free trial period or a lower entry price.
Assumption to check: High cost of entry for players
Validate with people who use this workflow before building.
Hypothesis 2
Implement thorough testing and updates to fix bugs.
Assumption to check: Some users report bugs during gameplay
Validate with people who use this workflow before building.
Hypothesis 3
Introduce cooperative or competitive multiplayer modes.
Assumption to check: Limited multiplayer options
Validate with people who use this workflow before building.
Hypothesis 4
Provide clearer explanations and benefits for each in-app purchase.
Assumption to check: In-app purchases can be confusing
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
When federal agents threaten his family, former outlaw John Marston is forced to hunt down the gang of criminals he once called friends. Experience Marston’s journey across the sprawling expanses of the American West and Mexico as he fights to bury his blood-stained past in the critically acclaimed predecessor to the 2018 blockbuster, Red Dead Redemption 2. Also included is Undead Nightmare, the iconic horror story that transforms the world of Red Dead Redemption into an apocalyptic fight for survival against a zombie horde. Available on mobile for the first time, this version features the complete single-player experiences of both games and also includes bonus content from the Game of the Year Edition and more.* * Red Dead Redemption does not feature multiplayer content. © 2005-2025 Rockstar Games, Inc. Rockstar Games, Red Dead, Red Dead Redemption, Undead Nightmare, the R* Logo, and related logos are trademarks of Take-Two Interactive Software, Inc. Uses Bink Video. ©1997–2025 by Epic Games Tools, Inc. All other marks and trademarks are properties of their respective owners. All rights reserved.
Written user reviews are not shown here. Check current App Store reviews >
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
react-native-maps
redux
BUILD KIT DIFFICULTY
Expert
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.
