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
Eye Dominance Evaluation
Discover your eye dominance with precision using our camera-based finger-pointing methodology
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
3 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 included16 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 Eye Dominance Evaluation: map the core Health & Fitness 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
Incorporate interactive features or gamification.
Assumption to check: Limited user engagement due to a single-use test
Validate with people who use this workflow before building.
Hypothesis 2
Provide step-by-step guidance and visual cues.
Assumption to check: Potential for unclear instructions
Validate with people who use this workflow before building.
Hypothesis 3
Enable results sharing on social media.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Add ongoing assessments to track changes over time.
Assumption to check: No follow-up assessments or tracking
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
Discover your eye dominance with precision using our camera-based finger-pointing methodology. Unlike traditional left/right tests, Eye Dominance Evaluation provides quantitative measurements on a -1 to +1 scale, helping you understand the strength of your eye dominance and track changes over time. PERFECT FOR: • Shooting Sports: Optimize your stance for rifle, shotgun, pistol shooting, and archery • Photography: Understand which eye naturally aligns with your viewfinder • Ball Sports: Improve batting, golf, and tennis performance by aligning with your dominant eye • Vision Training: Track eye dominance changes during vision therapy or training HOW IT WORKS: Our app uses a simple but accurate finger-pointing test with camera capture. Have a friend take photos of you pointing at the phone camera with each hand, then mark your pupils and fingertips on the images. The app analyzes the alignment using head-centric coordinate normalization to calculate your dominance index. KEY FEATURES: • Quantitative Results: Get precise measurements, not just "left" or "right" • Strength Tracking: Monitor how your eye dominance changes over time • Test History: Review all past tests with detailed analysis • Trend Analysis: View aggregate statistics and consensus scores across multiple tests • PDF Export: Generate comprehensive reports for your records • Privacy-Focused: All data stored locally on your device • Easy to Use: Clear step-by-step instructions guide you through each test WHY QUANTITATIVE MATTERS: Traditional tests (Miles test, Porta test, hole-in-card method) only tell you which eye is dominant. This imaging based approach measures HOW dominant, giving you actionable insights for sports, photography, and vision training applications. NOTE: This app is for informational and educational purposes only. It does not provide medical advice. Consult with qualified healthcare professionals before undertaking vision therapy or making decisions based on eye dominance results. Start measuring your eye dominance today!
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
axios
react-native-reanimated
react-native-svg
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.
