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
Color Vision Tests
Introducing "Color Vision Test" – Your Personal Guide to Understanding Color Perception!
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Color Vision Tests: 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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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 test types to enhance user engagement and satisfaction.
Assumption to check: Limited variety of tests available
Validate with people who use this workflow before building.
Hypothesis 2
Provide comprehensive feedback and recommendations based on test results.
Assumption to check: Lack of detailed results explanation
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate sharing features to allow users to share results with friends or healthcare professionals.
Assumption to check: No social sharing options for results
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a freemium model with basic tests available for free.
Assumption to check: Subscription model may deter users
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
Introducing "Color Vision Test" – Your Personal Guide to Understanding Color Perception! Embark on a vibrant journey to explore your color vision with our all-in-one app, designed meticulously for iOS users. "Color Vision Test" offers an array of comprehensive color vision tests, including the renowned Ishihara, Cambridge, and specialized Pediatric Tests. Whether you're curious about your color vision, monitoring changes over time, or simply engaging in a colorful exploration, our app is your perfect companion. With "Color Vision Test," you can: Take Various Color Vision Tests: Access the Ishihara Test for red-green color deficiencies, the Cambridge Test for a broader spectrum of color vision challenges, and Pediatric Tests designed with engaging visuals. Track Your Progress: Easily review previous tests to monitor changes or improvements in your color vision. Our intuitive interface allows you to navigate through your history, offering insightful reflections on your journey. User-Friendly Interface: Designed with ease of use in mind, our app ensures a seamless and engaging experience. Navigate effortlessly through different tests, access your history, and interpret your results with just a few taps. The "Color Vision Test" app is designed for informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. While this app offers various color vision tests, including Ishihara, Cambridge, and Pediatric Tests, it should not be used to make any medical decisions or diagnose color vision deficiencies or any other medical conditions.
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/native
axios
react-native-share
expo-ads-admob
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.
