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.
THE #1 SCOLIOSIS SCREENING APP — TRUSTED IN 75+ COUNTRIES
$9.99 · 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 Scoliometer: Scoliosis Test: map the core Medical 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: Limited functionality for tracking progress over time.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface may feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of reminders for measurements.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Premium features might not justify the cost.
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.
THE #1 SCOLIOSIS SCREENING APP — TRUSTED IN 75+ COUNTRIES Developed by Dr Kevin Lau, D.C. — NGO Representative to the United Nations Turn your iPhone into a clinical-grade scoliosis screening tool. Scoliometer measures the Angle of Trunk Rotation (ATR) in seconds — the fastest, most affordable way to check for spinal curvature at home or in the clinic. Trusted by doctors, physiotherapists, chiropractors, and parents in over 75 countries. WHY SCOLIOMETER? • Measures spinal curvature from 0° to 50° — beyond the range of most physical scoliometers • Accurate trunk rotation readings using your iPhone's built-in sensors • Screens for mild to severe scoliosis in seconds • Trusted by medical professionals as a reliable screening companion • No expensive equipment — clinical-grade results right in your pocket • Personalise the meter with beautifully designed skins HOW IT WORKS Have the patient bend forward into the Adam's Forward Bend position and place your iPhone across the spine. Scoliometer instantly reads the Angle of Trunk Rotation, helping identify curves that may need further evaluation. FOR PROFESSIONALS & FAMILIES Whether you're a clinician running routine screenings or a parent monitoring your child's spine at home, Scoliometer gives you a fast, non-invasive check — anytime, anywhere. No appointment needed. FROM A WORLD AUTHORITY ON SCOLIOSIS Dr Kevin Lau is an award-winning chiropractor, bestselling author, and NGO Representative to the United Nations. His bestselling books and clinical research have helped thousands of patients worldwide take control of their spinal health without surgery. Every feature of Scoliometer reflects his decades of expertise. DISCLAIMER Scoliometer is a screening tool and is not a substitute for professional medical diagnosis. Always consult a qualified healthcare provider for clinical evaluation and treatment decisions.
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.