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
Heart Murmurs Pro
Learn heart murmurs the easiest way possible with Heart Murmur Pro
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.2
67 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
JavaScript is required to complete mailbox verification.
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 Heart Murmurs Pro: map the core Medical workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 comprehensive details and resources about each murmur.
Assumption to check: Limited information on some murmurs
Validate with people who use this workflow before building.
Hypothesis 2
Use higher-quality audio recordings or clearer visual representations.
Assumption to check: Audio samples are sometimes unclear
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more distinct tab bar with clear labels and icons.
Assumption to check: Navigation can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Regularly update content and include user feedback mechanisms.
Assumption to check: Inconsistent updates and content accuracy
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
Learn heart murmurs the easiest way possible with Heart Murmur Pro. With 23 heart sounds included along with a wealth of clinically relevant information for each, you'll master heart sounds in no time at all. **Heart sound information includes** - Location where the sound is heard best - Brief Description - Etiology - Pathophysiology - Clinical Presentation - Physical Examination Findings - Diagnostic Evaluation - Treatment options - More information (links to Wikipedia, Google, and Medline Plus) **Features** - Universal app compatible and optimized for iPhone, iPod Touch, and iPad - 23 heart sounds included - Mark sounds as favorites for quick access - Clinically relevant information for each heart sound - Ability to edit heart sound information - In app links to Wikipedia, Google, and Medline Plus - Multiple Choice quiz mode - Free Answer quiz mode - Store quiz results in a Quiz History page - Cardiac Exam Guide included “Heart sounds are always a struggle for medical students and doctors alike. The key to learning them properly is simple repetition. This app gives you the opportunity for this. It even includes a fantastic quiz mode to test yourself. The information provided is also quite relevant and is certainly useful for students to have handy." -Dr. Don Nguyen, M.D. University of California, San Diego School of Medicine **PLEASE USE HEADPHONES FOR BEST RESULTS**
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Zustand
@react-navigation/native
expo-av
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.
