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
Wellmy - Heart Rate Monitor
Feel in control of your health with Wellmy
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
12,736 ratings · Top 15%
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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Combine features and design from your favorite apps.
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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/
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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 Wellmy - 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Feel in control of your health with Wellmy. Worrying about your health? Wellmy is here to help you track what matters most—pulse, blood pressure, and stress—so you can feel confident and calm every day. Why you'll love Wellmy: - Clarity and reassurance: Understand your body’s signals and ease health-related worries. - Personalized insights: Get feedback tailored to your health, so you always know where you stand. - Effortless tracking: Monitor key health metrics in one simple app. - AI-powered assistant: Ask questions about your health, get tips to manage symptoms, and even request personalized diet suggestions. Key features for your peace of mind: - Pulse tracking: Keep an eye on your heart rate and see how your body responds to stress. - Blood pressure trends: Stay informed about your cardiovascular health without complexity. - HRV analysis: Learn how stress impacts your health and discover ways to manage it. - Health balance overview: View your well-being at a glance with easy-to-understand reports. With Wellmy, you’re never alone on your health journey. Whether you're managing daily stress, seeking insights, or exploring lifestyle changes, Wellmy is your trusted partner for calm, confidence, and better health. Download now and take the first step to a healthier, worry-free life. Payment will be charged to your Apple ID account upon confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription by going to your Account Settings on the App Store after purchase. Detailed information on our Terms of Use and Privacy Policy is available here: Privacy Policy - https://airheartrate.com/privacy Terms of Use - https://airheartrate.com/termsofuse
Written user reviews are not shown here. Check current App Store reviews >
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
Add in-depth analytics and trends over time.
Assumption to check: Limited historical data analysis features
Validate with people who use this workflow before building.
Hypothesis 2
Include features for sharing stats on social media.
Assumption to check: Lack of social sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Enhance accuracy with better algorithms and user guidance.
Assumption to check: Inconsistent measurement accuracy
Validate with people who use this workflow before building.
Hypothesis 4
Improve UI with modern design principles and user feedback integration.
Assumption to check: Basic UI design
Validate with people who use this workflow before building.
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
Victory Native
Zustand
React Navigation
Axios
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.
