App Overview

Belly Beat - Baby Heartbeat icon

Belly Beat - Baby Heartbeat

Maksym Sutkovenko · Reference

Listen for your baby’s heartbeat, record meaningful pregnancy sounds, and save the moments you want to remember—with your iPhone and connected headphones.

Free

PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
1.9
14 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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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/
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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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

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Rork plan preview for Belly Beat - Baby Heartbeat: map the core Reference 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

Competitive pricing with generous free tier

Assumption to check: Expensive subscription

Validate with people who use this workflow before building.

Hypothesis 2

Focus on most-requested features first

Assumption to check: Missing features

Validate with people who use this workflow before building.

Hypothesis 3

Optimize for 60fps, fast load times

Assumption to check: Poor performance

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

Listen for your baby’s heartbeat, record meaningful pregnancy sounds, and save the moments you want to remember—with your iPhone and connected headphones. Belly Beat is a pregnancy listening and bonding app that uses your iPhone microphone and gentle audio enhancement to make subtle belly sounds easier to hear. No dedicated fetal Doppler or baby monitor hardware is required. LISTEN FOR BABY Connect your AirPods or headphones, place your iPhone gently against your bare belly, and explore slowly. Simple positioning tips and a live signal guide help you find clearer sound. RECORD PREGNANCY SOUNDS Capture audio clips directly in Belly Beat. Replay your favorite moments and build a private pregnancy sound journal organized by pregnancy week. SAVE AND SHARE Keep special recordings on your iPhone, then share them with your partner, family, or friends whenever you choose. PERSONALIZED FOR YOUR PREGNANCY Add your baby’s name, pregnancy week, and due date for a listening experience that grows with your journey. PRIVATE BY DESIGN No account is required. Live microphone audio is processed on your device. Saved recordings remain on your iPhone unless you choose to share them or explicitly enable diagnostic audio sharing, which is off by default. TIPS FOR BETTER LISTENING • Find a very quiet room • Connect AirPods or compatible headphones • Remove your iPhone case • Place the bottom microphone gently against bare skin • Move slowly and try several positions • Keep the headphone volume comfortable to avoid feedback • Be patient—results vary, and subtle sounds may be easier to hear later in pregnancy A FETAL DOPPLER ALTERNATIVE FOR BONDING Belly Beat is designed for expectant parents who want a simple pregnancy listening and recording experience without dedicated Doppler hardware. It uses your iPhone microphone rather than ultrasound. IMPORTANT Belly Beat uses your iPhone’s microphone to listen for belly sounds. It is a pregnancy bonding and keepsake app—not a medical device—and does not measure or monitor fetal heart rate. Results vary with pregnancy stage, baby position, environment, and device. Belly Beat should not replace regular prenatal care. If you’re concerned about anything during pregnancy, please contact your healthcare provider. SUBSCRIPTION Some features require an auto-renewing subscription. Payment is charged to your Apple Account when your purchase is confirmed. Your subscription renews automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings and restore previous purchases inside Belly Beat. Terms of Use: https://bellybeat.app/terms Privacy Policy: https://bellybeat.app/privacy

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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
RevenueCat
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.