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.
Thousands of professionals across the world already use Pool Doctor to keep their pools blue..
$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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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 Pool Doctor: map the core Utilities 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 it difficult to track multiple maintenance tasks.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited integration with pool sensors and automation devices.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High price point for basic features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of detailed water chemistry education.
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.
Thousands of professionals across the world already use Pool Doctor to keep their pools blue... you should too! This app is not for total beginners -- It is a powerful digital tool for professionals or enthusiasts. But don't worry! Instructions are constantly scrolling across the screen. Just enter whatever chemical readings you prefer using any test kit you own, and Pool Doctor will tell you exactly what chemicals to put into your pool and why. With Pool Doctor, you can adjust the chlorine, bromine, salt, pH, total alkalinity, calcium hardness, and even the cyanuric acid levels in all of your pools. You can even configure the ideal ranges and chemicals used to treat the pools (see screenshots). Pool Doctor gives all results and explanations in pounds, ounces, grams, kilograms, liters, gallons, or even in the number of scoops (you can enter custom scoop sizes); and changing units is as easy as pressing a button! This app supports regular, salt-water, or even bromine pools. Pool Doctor now saves basic reading and treatment records for all of your pools! Pool Doctor only shows you readings that apply to your pool type, so there is no unnecessary confusion! Pool Doctor will now calculate the Langelier Index automatically if you take all of the required readings! Pool Doctor now includes a shock calculator! Just enter the free and total chlorine levels, and Pool Doctor will automatically calculate how much of your preferred shock chemical is necessary to bring your pool to breakpoint chlorination.
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.