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
First Stop Health
First Stop Health
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
3,570 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 First Stop Health: 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
Simplify navigation with clearer labels and fewer options on each screen.
Assumption to check: Users report difficulty navigating the app due to cluttered UI.
Validate with people who use this workflow before building.
Hypothesis 2
Offer a free trial period for all subscription tiers to improve user acquisition.
Assumption to check: Limited subscription options with no trial period.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize API calls and improve loading indicators for a smoother experience.
Assumption to check: Inconsistent loading times and performance issues.
Validate with people who use this workflow before building.
Hypothesis 4
Add a robust FAQ section and chat support for user inquiries.
Assumption to check: Lack of comprehensive user support and FAQs.
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
First Stop Health. Care that people love. First Stop Health gives employees virtual access to a board-certified physician 24/7 for diagnosis and treatment of illnesses including infections (e.g. sinus, eye, ear or skin), sore throat, women’s health issues, and medication refills. Getting a phone or video consultation with a doctor is quick and easy with the First Stop Health app. Simply confirm the information provided by your employer and answer a few diagnostic questions and you’ll be connected with one of our doctors. Wait times are usually in less than 5 minutes, and prescriptions can be ready in less than an hour. Our app also allows employees to download sick notes, review consultation details, and contact our support team. First Stop Health is available exclusively to our client's employees as an employee benefit - consultation fees vary depending on your health plan. Most members have access with no copay or consultation fee. Pre-registration is not required. Download the app today and talk to a First Stop Health physician via phone or video in minutes. Health App integration is available as an option for blood pressure and weight to provide doctors with valuable data to support patients requested diagnosis and triage. This data is used for diagnostic and quality assurance purposes only.
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
Axios
React Navigation
React Native Paper
Zustand
BUILD KIT DIFFICULTY
Expert
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.
