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
MedCode: Code blue timer
MedCode is a code blue resuscitation timer built for emergency providers in training — nurses, paramedics, and physicians managing high-acuity codes
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
3 ratings · Top 30%
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 MedCode: Code blue timer: 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
Create a more customizable timer interface with easy-to-access buttons.
Assumption to check: Users may find timers difficult to manage during high-stress situations.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more detailed history log with export options.
Assumption to check: Limited history tracking may lead to loss of important data.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear explanations and comparisons of subscription benefits upfront.
Assumption to check: Subscription tiers might confuse users.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the UI and provide guided tours for new users.
Assumption to check: User interface may be overwhelming with too many features.
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
MedCode is a code blue resuscitation timer built for emergency providers in training — nurses, paramedics, and physicians managing high-acuity codes. Track epinephrine intervals, compression cycles, and elapsed resuscitation in real time. MedCode keeps accurate record of every intervention for documentation history . Designed for the pace of a real code — fast to launch, easy to read under pressure, and built to stay out of your way. With the MedCode app you can add widgets to your lock screen and control screens to quickly launch the app from anywhere on your phone. The MedCode app requires a one-time purchase for full access. Free trial ends after 7 days. Privacy Policy: https://coastallabs.io/apps/medcode/privacy-policy.html Terms of Service: https://coastallabs.io/apps/medcode/terms-of-service.html
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
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Expo
Zustand
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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.
