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.
Construction Cost Estimator helps contractors and service companies quickly create on-site estimates for construction and repair projects
$19.99 · In-app purchases
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 Construction Cost Estimator: 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: Users find inputting data tedious and prone to errors.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization options for estimates.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase process can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: App lacks offline capabilities.
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.
Construction Cost Estimator helps contractors and service companies quickly create on-site estimates for construction and repair projects. You can save time and money by creating the estimate on the spot and then emailing it to the customer as a PDF or printing a hardcopy. Each cost item is broken down into Material, Labor, Other, and Subcontract costs. You can save frequently used cost items in your own custom costbook, or you can purchase 3 different Craftsman costbooks within the app that contain detailed costs for over 30,000 common construction items. Just search for a cost item, enter the quantity, and add it to your estimate in 3 easy steps! FEATURES • Fast and easy user interface for creating cost estimates • Customize multiple types of PDF reports, and email them to customers directly from the app • Add the logo and contact info for your company to create professional-looking estimates • Costs are organized by Phases, Areas, and Categories that can be customized for each project • Enter your overhead, profit, and tax rates for each project • The app provides full support for international currencies and units CRAFTSMAN COSTBOOKS You can save common cost items in your own custom costbook, and you can purchase 3 different Craftsman Costbooks within the app via in-app purchase for $49.99 each. The costbook data is only valid in the US and Canada, but the costbooks are also available for purchase internationally. • National Construction Estimator • National Home Improvement Estimator • National Renovation and Insurance Repair Estimator Each costbook contains thousands of common construction items, and the costs are localized to your US Zip Code or Canadian Postal Code. The Craftsman Costbooks are really helpful if you need to provide a cost estimate for work that you haven't done before, or if you need to do a sanity check on cost estimates from subcontractors. You can also copy cost items from the Craftsman Costbooks to your own custom costbook, and then change any of the numbers. WHO USES CONSTRUCTION COST ESTIMATOR? The app is used by many types of contractors, estimators, and service companies, such as: General contractors, electricians, plumbers, builders, landscapers, roofers, painters, carpenters, heating and air conditioning, flooring, siding, tile, concrete, asphalt paving, bathroom and kitchen remodeling, deck builders, handyman services, pest control, real estate flippers and rehabbers, insurance repair estimators, and more! ----- See more screenshots and a sample PDF estimate at: http://www.ConstructionCostEstimator.com ----- I am dedicated to responding quickly to support requests. If you have questions, problems, or feature requests, please send me an email using the Support link below. -----
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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.