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
Pupillary Distance
- Accurate Measurements: Utilizes augmented reality to measure pupillary distance (PD).
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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/
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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 Pupillary Distance: 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
Provide step-by-step interactive instructions within the app.
Assumption to check: Difficulty in accurately measuring pupillary distance without proper guidance.
Validate with people who use this workflow before building.
Hypothesis 2
Offer more attractive free features to enhance user engagement.
Assumption to check: Limited features for free users compared to paid.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate user ratings and feedback options to improve the app.
Assumption to check: Lack of user feedback mechanisms.
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
- Accurate Measurements: Utilizes augmented reality to measure pupillary distance (PD). - Binocular and Monocular PD: Get both overall and individual eye measurements. - Near Binocular and Monocular PD estimates. - User-Friendly Interface: Simple, intuitive design for effortless use. - Instant Results: See your measurements in real-time on the screen. - Share Function: Easily share your results via email, messages, or save to notes. - Detailed Instructions: In-app guide explains PD and how to get the best results. What is Pupillary Distance? PD is the distance between the centers of your pupils. This crucial measurement ensures that the optical center of each lens in your glasses aligns perfectly with your pupils, providing the best possible vision and comfort. Who Needs This App? - Anyone ordering glasses online - Eyecare professionals - People curious about their eye measurements How It Works: 1. Open the app and follow the on-screen guide. 2. Position your face as directed. 3. The app will detect your pupils and nose bridge. 4. Review your measurements on screen. 5. Share or save your results as needed. Note: This app requires an iPhone with TrueDepth camera capabilities.
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
Zustand
React Navigation
Expo Camera
React Native Paper
BUILD KIT DIFFICULTY
Advanced
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.
