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
CB Toolkit
Commercial Broker Toolkit
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 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 CB Toolkit: 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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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
Expand functionalities to include advanced filtering and sorting options.
Assumption to check: Limited tool and resource management features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Focus on a clean, minimalist design with essential features highlighted.
Assumption to check: User interface may feel cluttered with too many features
Validate with people who use this workflow before building.
Hypothesis 3
Add integrations with popular services like Google Drive or Dropbox.
Assumption to check: Lack of integration with other productivity tools
Validate with people who use this workflow before building.
Hypothesis 4
Implement a feedback system to allow users to suggest new tools/resources.
Assumption to check: No user feedback mechanism for tool/resource suggestions
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
Commercial Broker Toolkit The Commercial Broker Toolkit puts the most essential commercial real estate formulas right in your pocket — fast, clean, and built the way professionals actually work. Create a property record, run your numbers, and every calculated value is saved and shared across all calculators automatically. Enter your NOI once and it's ready in Cap Rate, DSCR, Cash on Cash, and everywhere else it applies. No re-entering data between screens. CALCULATORS INCLUDED: Valuation · Cap Rate | Cap Value | NOI · Gross Rent Multiplier | PRI | Value Returns · Cash on Cash Return · Internal Rate of Return | NPV Rental Rates · Effective Rental Rate | Gross Effective Rate · Rentable / Usable Square Footage Financing · Loan Payment | Loan Balance · Loan Amount using DSCR · Effective Yield on a Loan BUILT FOR HOW YOU WORK Each calculator lets you solve for any variable — check the box for the value you need, fill in the other fields, and tap Calculate. Results save back to the property instantly. ONE PRICE. ONE PURPOSE. NO NOISE. Buy it once. It installs on every device on your Apple ID. No subscriptions, no in-app purchases, no upgrade prompts, no interruptions. This app does one thing: its job.
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
React Query
Async Storage
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.
