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 Migraine Journal
My Migraine Journal is a comprehensive, privacy-first migraine tracking app designed to help you understand your migraines and take control of your health.
$4.99
PRICE
$4.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 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.
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 Migraine 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
Implement reminders or notifications for users to log entries.
Assumption to check: Users often find it hard to remember triggers and symptoms over time.
Validate with people who use this workflow before building.
Hypothesis 2
Provide charts or graphs to visualize headache frequency and triggers.
Assumption to check: Limited data visualization options for tracking patterns.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to add custom triggers or symptoms.
Assumption to check: Lack of personalization options for tracking specific triggers or symptoms.
Validate with people who use this workflow before building.
Hypothesis 4
Enable users to export data or view trends over time.
Assumption to check: Poor support for analyzing long-term data trends.
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
My Migraine Journal is a comprehensive, privacy-first migraine tracking app designed to help you understand your migraines and take control of your health. TRACK EVERY DETAIL Log attacks with detailed information including migraine phase, duration, severity, symptoms, triggers, and medications. Add custom symptoms, triggers, and medications to match your unique experience. DISCOVER YOUR PATTERNS Smart trend analysis reveals your personal migraine patterns. See weekly comparisons, attack frequency over time, most common triggers, severity breakdowns by time of day, and medication effectiveness ratings. SHARE WITH YOUR DOCTOR Generate professional PDF reports summarizing your migraine history, trigger patterns, and medication effectiveness. Email reports directly to your healthcare provider for more productive appointments. BUILT-IN CALENDAR Visual calendar with color-coded dots showing your migraine history at a glance. Tap any date to see details or log a new attack for that day. MULTIPLE PROFILES Track migraines for yourself and family members with easy profile switching. Each profile maintains its own complete history and trends. YOUR PRIVACY MATTERS All data stays on your device. No accounts, no cloud, no tracking. Your health information never leaves your phone. FEATURES AT A GLANCE • Full attack logging with phase, severity, duration, symptoms, triggers, and medications • Visual calendar with migraine history • Trend analysis with charts and insights • Medication effectiveness tracking • Professional doctor reports with PDF export • Multiple profile support • Full backup and restore • Spreadsheet export • Light and dark mode • Customizable reminders • Streak counter for migraine-free days One-time purchase. No subscriptions. No ads. No account required.
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
Supabase
Zustand
React Navigation
TypeScript
BUILD KIT DIFFICULTY
Intermediate
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.
