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
Sprout - Pregnancy Tracker
Pip is your companion through every week of pregnancy
$2.99 · In-app purchases
PRICE
$2.99
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 included17 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 Sprout - Pregnancy Tracker: 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 customizable tracking features and user input options.
Assumption to check: Limited personalization options for tracking individual pregnancy experiences.
Validate with people who use this workflow before building.
Hypothesis 2
Add social sharing and community discussion boards.
Assumption to check: Lack of community support and interaction features.
Validate with people who use this workflow before building.
Hypothesis 3
Provide more in-depth articles and videos related to pregnancy.
Assumption to check: Insufficient educational content on pregnancy stages.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce customizable reminders for doctor appointments, milestones, and tips.
Assumption to check: No reminders or notifications for important milestones.
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
Pip is your companion through every week of pregnancy. Simple, beautiful, and designed with expecting parents in mind. COUNTDOWN TO BABY Watch your pregnancy progress with a beautiful countdown showing weeks, days, and a visual progress ring. Know exactly how far along you are at a glance. WEEKLY DEVELOPMENT Discover what's happening each week with detailed baby development information. See fun size comparisons (your baby is the size of a lemon!) and learn about the changes happening in your body. MILESTONE TRACKING Celebrate your pregnancy journey with preset and custom milestones. From hearing the heartbeat to feeling first kicks, mark each special moment along the way. SYMPTOM LOGGING Quickly log how you're feeling each day. Track common pregnancy symptoms like nausea, fatigue, and cravings. Look back at your history to spot patterns and share with your healthcare provider. APPOINTMENT MANAGEMENT Never miss an important appointment. Schedule checkups, ultrasounds, and prenatal visits with optional reminders to keep you on track. WEIGHT TRACKING Monitor your pregnancy weight gain with easy logging and visual charts. Sync with Apple Health to keep all your health data in one place. PARTNER SHARING Keep your partner in the loop with calendar sync. Appointments automatically sync to your shared iCloud calendar so your partner always knows about upcoming checkups and ultrasounds. APPLE HEALTH INTEGRATION Connect with Apple Health to import and export health data. Sync weight entries, view sleep patterns, heart rate, step count, and blood pressure. Export symptoms like nausea and fatigue directly to Health. PRIVACY FIRST Your pregnancy data stays on your device. No accounts required, no data shared. Export your data anytime in JSON or CSV format. BEAUTIFUL DESIGN Enjoy a calm, thoughtful interface designed to reduce stress during this special time. Soft colors, gentle animations, and intuitive navigation make tracking a joy, not a chore. Features: - Pregnancy countdown with progress visualization - 40 weeks of baby development content - Baby size comparisons for each week - Symptom tracking with history view - 25+ milestone moments to celebrate - Appointment scheduling with reminders - Calendar sync for partner sharing - Weight tracking with charts - Full Apple Health integration (import & export) - Data export (JSON/CSV) - No account required Made with love for expecting parents everywhere.
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
React Navigation
TypeScript
Zustand
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.
