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
my pregnancy beats - prenatal listener
Every pregnancy and every pregnant woman is unique.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.2
17 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 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 my pregnancy beats - prenatal listener: 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 library with user-generated content and community submissions.
Assumption to check: Limited soundscape selection
Validate with people who use this workflow before building.
Hypothesis 2
Focus on bug fixes and user feedback to improve stability.
Assumption to check: Poor user ratings due to bugs
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer information on benefits of each subscription tier.
Assumption to check: Subscription model not clear
Validate with people who use this workflow before building.
Hypothesis 4
Revamp UI/UX for a modern, fresh look that appeals to users.
Assumption to check: Interface is outdated
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
Every pregnancy and every pregnant woman is unique. Some women feel an instant connection the moment they know they are pregnant, while others may take until birth for them to feel the connection. Regardless of which situation you feel you are in, this app will help you establish the connection as early as 30 weeks into the pregnancy! :) Use your iPhone / iPad microphone to listen to your baby's sounds (Heartbeats and other sounds). NO ACCESSORY REQUIRED! You can record, and share the recordings via email, Facebook, Twitter or WhatsApp. Turn your smartphone into a prenatal listener for a great bonding experience. Using ONLY THE IPHONE'S MICROPHONE, you can listen to your baby and share the experience with family and friends. This app supports: * iPhone's , iPad's and iPad Mini. * It does NOT support iPod Touch. * For best results, use this app after reaching week 30. * This app is NOT a medical device, has not been reviewed by the FDA, and is NOT intended as a replacement for medical advice of any kind. For any medical questions or concerns regarding your pregnancy and your baby’s health, please consult with your medical professional * Make sure to take your iPhone out of its case, before you start using the app. * We recommend switching your iPhone to airplane mode to stop all mobile and Internet transmissions before using this app (The app itself does not activate any iPhone features that emit waves of any kind, It only use the microphone). *Older iPhone models (4, 4s, 3GS) can also be used with simple headphones without an embedded microphone. **********BE ADVISED PLEASE!! ********** * For best results, use this app after reaching week 30. * This app is NOT a medical device, has not been reviewed by the FDA, and is NOT intended as a replacement for medical advice of any kind. For any medical questions or concerns regarding your pregnancy and your baby’s health, please consult with your medical professional. * To use our app, please accept terms and agreement. Please make sure to review it, before you download the app.
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.
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BUILD KIT DIFFICULTY
Advanced
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.
