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
Delta Executor game
rediscover retro gaming — all-in-one emulator for iphone & ipad
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.5
11 ratings · Below Average
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
Make this idea yours
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/
Preview a sample Build Kit No email needed
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 Delta Executor game: map the core Entertainment 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
Introduce more characters and unique abilities to enhance gameplay.
Assumption to check: Limited character variety and unlockable options.
Validate with people who use this workflow before building.
Hypothesis 2
Focus on improving UI/UX based on user feedback.
Assumption to check: 2.5/5 rating indicates poor user experience.
Validate with people who use this workflow before building.
Hypothesis 3
Create compelling character packs and game modes that feel rewarding.
Assumption to check: In-app purchases may not provide enough value.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce new game modes and challenges to keep players engaged.
Assumption to check: Game mechanics may feel repetitive over time.
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
rediscover retro gaming — all-in-one emulator for iphone & ipad bring your favorite classic handheld titles back to life with a powerful, smooth, and easy-to-use emulator. enjoy nostalgic gameplay with customizable controls, clean visuals, and fast performance — anytime, anywhere. supported systems: gb, gbc, gba, nds this app does not include game files. please load your own backups in accordance with local laws. features smooth & accurate emulation experience responsive gameplay with enhanced performance on modern ios devices. - easy on-screen controls intuitive and customizable virtual buttons for a comfortable handheld experience. load your own game files import, manage, and organize your rom backups in one clean interface. customization & themes choose from multiple beautifully designed controller skins. some optional premium themes require an in-app purchase. save states & auto-saving pick up right where you left off — anytime. optimized for iphone & ipad enjoy a modern ui designed for the latest ios versions, with support for all screen sizes. disclaimer this app is not affiliated with or endorsed by any third-party console manufacturer. no game files are included. please use your own backups in accordance with local laws. relive the classics. anytime. anywhere. privacy policy: https://privacypolicytamhoangphuong.blogspot.com/2025/11/privacy-policy.html terms and conditions: https://privacypolicytamhoangphuong.blogspot.com/2025/11/terms-and-conditions.html contact us: https://privacypolicytamhoangphuong.blogspot.com/2025/11/contact-us.html
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
react-navigation
react-native-reanimated
expo-asset
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.
