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 Tracker
Take control of your health with Lab Tracker – the ultimate app for effortlessly managing your lab values and blood test results
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
3 ratings · Below Average
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 Lab Tracker: 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
Implement a calendar view and reminders for appointments.
Assumption to check: Users find it difficult to track appointments effectively.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance filtering and sorting options for test results.
Assumption to check: Test result tracking can be confusing with no clear organization.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to set personalized reminders and notification preferences.
Assumption to check: Limited customization options for notifications.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate a feature for users to leave feedback or ratings for labs.
Assumption to check: Lack of user feedback functionality.
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
Take control of your health with Lab Tracker – the ultimate app for effortlessly managing your lab values and blood test results. Whether it's your cholesterol, glucose, or any other vital metric, Lab Tracker empowers you to monitor and understand your health like never before. Key Features: * Intuitive Tracking: Easily input your lab results and track your health journey. Lab Tracker provides a simple and user-friendly interface to streamline the process. * Color-Coded Insights: Instantly grasp the significance of your lab values with a color-coded system. Clear indicators help you understand if your results fall within the normal range at a glance. * Graphical Views: Dive into the history of your health with comprehensive graphical views. Visualize trends over time and gain valuable insights into your well-being. * Multiple Profiles: Manage lab values not just for yourself but for your loved ones too. Lab Tracker allows you to create and switch between multiple profiles, making it easy to keep track of the health of your family members. * Own custom reference values: Define your own minimum and maximum values for the laboratory values per profile. * CSV export: Export the lab values for a test as a CSV file. * Sync Across Devices: Lab Tracker syncs all your profiles and lab results seamlessly via iCloud. Access your health data anytime, anywhere, on all your iOS devices. * No Ads, Just Health: Lab Tracker is dedicated to providing a seamless health tracking experience without any interruptions. Enjoy an ad-free environment while focusing on what matters most, your well-being. * Privacy: Your data is safe and private. Lab Tracker does not collect any data from you and does not share any data with third parties. All information is securely stored and synchronized only in your personal iCloud account. Why Lab Tracker? Lab Tracker goes beyond basic health tracking apps. It's a comprehensive solution designed to simplify the way you manage and understand your lab values. Take charge of your health with Lab Tracker today! Download now and embark on a journey towards a healthier, more informed you. If you find bugs, or have feature ideas, or have wishes for the support of additional lab values or units, feel free to contact me here: [email protected] Disclaimer: Users of this app must seek a doctor’s advice in addition to using this app and before making any medical decisions. This app is not intended to diagnose, treat, cure, or prevent any disease or medical condition.
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Axios
Zustand
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.
