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.
You are standing in the driveway
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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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for InvestorBuilt: Deal Analyzer: map the core Business workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
You are standing in the driveway. The agent is waiting. You need to know if this deal works. InvestorBuilt runs the numbers right there on your phone. No signal needed. No login. No account to create. WHAT IT DOES Fix & Flip Profit Visualizer Purchase price, rehab budget, holding costs, and sale costs go in. A net profit number comes out, with your margin and your maximum allowable offer. Co-Living Wealth Visualizer Room-by-room rent, weekly or monthly, mixed rates or flat. See monthly cash flow, cash-on-cash return, DSCR, and a five year wealth projection. Includes a leverage tradeoff chart so you can watch what a gap loan actually does to your return. Mortgage Calculator Full PITI breakdown, five year equity snapshot, and total interest paid. EVERY DEAL GETS A VERDICT GO. TIGHT. WALK AWAY. Not a wall of numbers you have to interpret standing in someone's kitchen. A verdict, plus the reason behind it. BUILT TO WORK WHERE YOU WORK Basements have no signal. Rural properties have no signal. InvestorBuilt does the math on your device, so it works anywhere. There is no account, because there is nothing to sign into. Open it and start typing. WHO THIS IS FOR Flippers walking houses. Co-living and rent-by-room operators underwriting bedrooms instead of units. Agents who want to hand an investor a real number instead of a guess. Anyone tired of driving home to open a spreadsheet. SHARE THE RESULT Every deal produces a summary you can send to a partner, a lender, or your own records. ABOUT Built by Robert T. Szigeti, an active real estate investor who got tired of losing deals to slow math. Estimates are for analysis only. Not financial, tax, or legal advice. Verify every number before you buy.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.