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
Rental ROI Plus
Maximize Your Rental Property Profits with Rental ROI Plus!
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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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A product spec, screen plans, and build steps for your coding agent.
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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 Rental ROI Plus: map the core Finance 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
Include detailed property analytics and historical performance tracking
Assumption to check: Limited functionality beyond ROI calculations
Validate with people who use this workflow before building.
Hypothesis 2
Add a feature to export reports as PDFs or share via email
Assumption to check: No option for sharing reports or results
Validate with people who use this workflow before building.
Hypothesis 3
Revamp the UI with modern design patterns and animations
Assumption to check: User interface may feel outdated
Validate with people who use this workflow before building.
Hypothesis 4
Implement currency selection for international users
Assumption to check: Lack of support for multiple currencies
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
Maximize Your Rental Property Profits with Rental ROI Plus! Take the guesswork out of managing your rental properties with Rental ROI Plus, the ultimate tool for landlords, real estate investors, and property managers. Whether you're evaluating a new investment or optimizing your current portfolio, Rental ROI Plus provides the insights you need to make smarter financial decisions. Effective for both short and long term rentals. Key Features: - Comprehensive ROI Analysis: Instantly calculate your rental property's return on investment (ROI) with detailed breakdowns of cash flow, equity, and appreciation. - Interactive Graphs: Visualize your property's performance over time with easy-to-read charts and graphs. - Customizable Inputs: Adjust variables like purchase price, down payment, interest rate, rent, and expenses to see how they impact your bottom line. - Cash Flow Tracking: Monitor your monthly and annual cash flow to ensure your property stays profitable. - Break-Even Analysis: Determine how long it will take to recover your initial investment. - Property Appreciation: Factor in property value growth to see the long-term potential of your investment. Why Choose Rental ROI Plus? - Save Time: No more spreadsheets or manual calculations—get accurate results in seconds. - Make Informed Decisions: Evaluate potential investments with confidence and optimize your existing properties for maximum profitability. - Plan for the Future: Understand how your property will perform over time and identify opportunities for growth. Who Is It For? - Landlords: Track your rental income and expenses with ease. - Real Estate Investors: Analyze potential deals and maximize your returns. - Property Managers: Provide detailed financial insights to your clients. Start Maximizing Your Rental Profits Today! Download Rental ROI Plus now and take control of your rental property investments. Make smarter decisions, grow your wealth, and achieve your financial goals with confidence.
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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
Supabase
TypeScript
React Navigation
Zustand
BUILD KIT DIFFICULTY
Starter
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.
