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.
Are your eyes as sharp as you think?
$2.99 · 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 Eye Chart Test by Dr. Evans: 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 options for different eye charts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No user account or historical data tracking
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of engaging visuals or animations
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No sharing feature for results
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.
Are your eyes as sharp as you think? Eye Chart Test is the most accurate vision screening app on the App Store, designed and calibrated by Dr. Ryan Evans, a licensed Doctor of Optometry. It uses the same Sloan letter standard found in real eye clinics, not a rough approximation. WHY THIS ONE IS DIFFERENT Most vision apps just show big letters on screen. This one is actually calibrated. It knows your exact device's pixel density, adjusts for your testing distance, and delivers a true LogMAR result -- the same scale your eye doctor uses to record your prescription. WHAT YOU GET - Clinically calibrated Sloan letter chart (the gold standard in acuity testing) - Tests both eyes separately -- right eye (OD) and left eye (OS) - True 20/20 to 20/200 scoring on the standard visual acuity scale - Mirror mode for accurate 10-foot distance testing at home - Hands-free voice recognition -- just say the letters aloud - Shareable results card to send to your doctor or friends - Glasses vs. uncorrected comparison built in DESIGNED BY A REAL DOCTOR Dr. Ryan Evans is a practicing Doctor of Optometry. The testing protocol, letter sizing, and pass/fail logic are all based on actual clinical standards used in professional eye exams. WHEN TO USE IT - Quick check between annual eye exams - Wondering if your prescription has changed - Monitoring a family member's vision - Anyone who wants to know their actual number IMPORTANT: This app is an educational screening tool and is not a substitute for a comprehensive eye examination. If your results suggest reduced vision, we recommend scheduling an exam with your local optometrist.
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.