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
PulseFlow-Heart Rate Monitor
pulseflow: your daily heart health companion
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.2
64 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 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 PulseFlow-Heart Rate Monitor: map the core Health & Fitness 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
Implement advanced algorithms and calibrations for improved accuracy.
Assumption to check: Inaccurate heart rate measurements compared to professional devices.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance integration with HealthKit and Google Fit.
Assumption to check: Limited integration with other health apps.
Validate with people who use this workflow before building.
Hypothesis 3
Introduce challenges and rewards for users to stay motivated.
Assumption to check: Poor user engagement due to lack of gamification.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify navigation and focus on core functionalities to improve user experience.
Assumption to check: Cluttered interface with too many options.
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
pulseflow: your daily heart health companion monitor. understand. thrive. discover a healthier you with pulseflow — the all-in-one app that puts your heart, mind, and wellness first. whether you’re a fitness enthusiast or managing daily wellness, pulseflow empowers you to take charge of your health with fast, accurate measurements and holistic insights. key features: heart rate measuring - measure your pulse using just your iphone camera and flashlight blood pressure tracking - track your blood pressure trends and get personalized health insights blood oxygen monitoring - monitor your blood oxygen levels and view long-term patterns - blood oxygen monitoring requires manual input blood sugar recording - record your glucose measurements and visualize your daily patterns health journal - record blood pressure, and emotional states - add personalized tags and notes to each reading personalized health reports - daily summaries to give you a quick snapshot of your wellbeing - weekly reports showing heart, stress, energy, stress trends - actionable suggestions to improve habits and balance premium features - unlimited pulse monitoring - full access to wellness features - exportable health reports - ad-free experience and priority support begin with a free trial. subscription renews automatically unless canceled at least 24 hours before the end of the current period. you can manage your subscription in your ios settings. disclaimer: pulseflow is not a medical device. it is designed for general wellness and fitness tracking only. heart rate measurements are for general wellness purposes only. privacy policy: https://landing.pulseflow.health/privacy-policy.html terms of use: https://landing.pulseflow.health/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
React Native
Expo
Zustand
Victory Native
React Navigation
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.
