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.
Baby Tracker makes it simple to record feedings, sleep, diaper changes, pumping, growth, health, and milestones—all in one place
$4.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Baby Tracker Pro - Newborn Log: map the core Medical workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Poor data visualization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization for logging activities
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent user notifications
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No data export options
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Baby Tracker makes it simple to record feedings, sleep, diaper changes, pumping, growth, health, and milestones—all in one place. Designed by busy parents, for busy parents, it keeps everyday tracking quick, clear, and easy to share with caregivers. WHAT’S NEXT One more helpful cue for your baby’s day. What’s Next uses on-device AI to turn recent activity logs into personalized timing cues. Depending on what you’ve logged, it may show: • A likely wind-down window before sleep • An estimated length for the next nap or sleep • An approximate wake-up window • An estimated time for the next feed • A suggested time to check the diaper Cues can start appearing after just a few logs. Regular, complete logging helps make them more personal to your baby’s developing routine. GUIDANCE, NOT A SCHEDULE Use What’s Next alongside your baby’s own cues and your judgment—not as a fixed schedule or instruction. What’s Next is not medical advice. Contact a healthcare professional if you have concerns about your baby’s health, sleep, or feeding. PRIVATE BY DESIGN What’s Next cues are created directly on your device. Your baby’s logs aren’t sent to us to generate them. FEEDING TRACKER • Track breastfeeding with an easy nursing timer • Record which side you last used and time spent on each breast • Log bottles, formula, expressed milk, and solids • Record pumping sessions and amounts • Add notes about preferences, reactions, or other details SLEEP TRACKER • Record naps and nighttime sleep • Use a convenient sleep timer • Review sleep patterns over time • Set reminders and alarms • See personalized What’s Next sleep and wake-up cues DIAPER TRACKER • Log wet, dirty, and mixed diapers • Quickly see when the last diaper change occurred • Review diaper patterns and share records with caregivers or healthcare professionals GROWTH, HEALTH, AND DEVELOPMENT • Track height, weight, and head circumference • Compare measurements against World Health Organization growth standards • Record medications, vaccinations, and temperature • Save important health notes and history • Capture milestones with photos and journal entries CHARTS AND REPORTS • Review activity by day, week, or month • Recognize patterns across sleep, feeding, and diaper records • Export records as a PDF • Email or print reports for caregivers and healthcare professionals MADE FOR THE WHOLE FAMILY • Sync records across multiple devices • Keep caregivers up to date • Use Home Screen and Lock Screen widgets for quick information • Track active sessions with Live Activities • Record and review activities from Apple Watch • Use Siri Shortcuts for convenient hands-free logging BABY TRACKER PLUS Your existing Baby Tracker Pro purchase continues to include all current tracking features. Try What’s Next with a free 3-day preview. After the preview, continued access requires an auto-renewing Baby Tracker Plus subscription. Plus adds personalized sleep, feed, and diaper cues. Pricing and renewal terms are shown before you subscribe. You can manage or cancel your subscription in App Store settings. From late-night feedings to first steps, Baby Tracker helps you spend less time managing records and more time with your baby. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.nighp.com/babytracker/babytracker_pp.html
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.