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
Lab Alpha Medical Converter
Easily & quickly convert US (United States) units to SI (International System of Units), or vice versa, wherever you are with full offline functionality
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
18 ratings · Top 15%
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 included15 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 Lab Alpha Medical Converter: 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 the list of units and types for more comprehensive conversions.
Assumption to check: Limited measurement types available for conversion
Validate with people who use this workflow before building.
Hypothesis 2
Implement a user account system for saving preferences and history.
Assumption to check: Lack of user account features
Validate with people who use this workflow before building.
Hypothesis 3
Add offline access to core functionalities for better usability.
Assumption to check: No offline functionality
Validate with people who use this workflow before building.
Hypothesis 4
Create a comprehensive help section with FAQs and usage examples.
Assumption to check: Inadequate help documentation
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
Easily & quickly convert US (United States) units to SI (International System of Units), or vice versa, wherever you are with full offline functionality. Create custom conversion calculators or use one of 300+ pre-loaded into the app. LAB ALPHA - HIGHLIGHTS • Offline functionality • Accurate conversions between US and SI medical units • Over 300 preset conversion calculators • Create your own custom converters • Easily search through & find recently used calculators • Create a list of favourites QUICK CONVERSIONS When reading scientific journals, many scientists struggle to convert between imperial American units and International System of Units. With so many values, converting them mentally can be a challenge. With Lab Alpha, you can quickly convert any medical unit using your smartphone, so you can get back to reading. OVER 300 CONVERSION CALCULATORS We’ve loaded the app up with over 300 ready-to-go medical unit converters. Quickly search through all the calculators to find the one you need, or create custom converters and save them to use whenever you need. Lab alpha is the simplest and most accurate way to convert the units of most common laboratory tests and drugs. Easily read any PubMed indexed journal such as NEJM, JAMA, The Lancet, Science, Nature and many more, no matter where in the world you are. FOR THE MOST ACCURATE MEDICAL UNIT CONVERSIONS – DOWNLOAD LAB ALPHA TODAY! For educational purposes only. Please read the disclaimer before use.
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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.
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BUILD KIT DIFFICULTY
Starter
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.
