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
BP Journal
Stay on Top of Your Blood Pressure
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
4 ratings · Top 50%
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/
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 BP Journal: 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
Provide customizable input options for user preferences
Assumption to check: Limited customization for input fields
Validate with people who use this workflow before building.
Hypothesis 2
Introduce a reminder feature with notifications
Assumption to check: No reminders for readings
Validate with people who use this workflow before building.
Hypothesis 3
Add advanced analytics and user-friendly graphs
Assumption to check: Basic analysis and trends visualization
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to export readings as CSV or PDF
Assumption to check: Limited support for data export
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
Stay on Top of Your Blood Pressure BP Journal helps you record, review, and share your blood pressure readings with clarity and consistency. Log your readings, visualize trends in color-coded charts, and keep your data organized across your iPhone and iPad. Create clean, doctor-friendly PDF reports to share your blood pressure history during medical consultations or with caregivers. Whether you are tracking daily readings or managing blood pressure under medical guidance, BP Journal offers a simple and focused journaling experience. __________ Key Features • Record and Review Readings Log your blood pressure and pulse values quickly. Each entry is classified as Low, Normal, High Normal, or Hypertension for easy reference. • Add Context to Every Measurement Capture additional context such as activity level, meals, or medication to better reflect real-world conditions around each reading. • Visual Charts for Trends View your readings over 1 Month, 6 Months, 1 Year, or All Time. Charts include visual bands for normal systolic and diastolic ranges, helping you see how readings compare over time. • Share Readings as PDF Reports Generate clean, easy-to-read PDF reports of your blood pressure history for sharing with doctors, caregivers, or family members. • Sync Across Devices Automatically keep your blood pressure readings in sync across your iPhone and iPad when using the same Apple account. • Apple Health Integration Optionally sync your readings with Apple Health or disable sharing at any time. You remain in full control of your data. • Private and Secure Your data is stored securely on your device and synced across your iPhone and iPad when enabled. You may also choose to share data with Apple Health. No sign-ups, no ads, no tracking — your health data remains yours. __________ Who It’s For • Individuals tracking blood pressure regularly • People managing blood pressure with guidance from a healthcare professional • Health-conscious users who prefer visual trends and history _________ Why You’ll Love It • Clean, modern interface built with SwiftUI • Designed for clarity and ease of use on iPhone and iPad • Quick entry using intuitive picker wheels • Supports Dark Mode and Dynamic Type for comfortable reading
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
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@react-native-async-storage/async-storage
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.
