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
Nugget - Baby Tracker
Track your baby's feeds, sleep, and diapers with ease
$0.99 · In-app purchases
PRICE
$0.99
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.
Build your own version
Build Kit
Make this idea yours
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 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 Nugget - Baby Tracker: map the core Lifestyle 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
Streamline input process with smarter defaults and quick entry options.
Assumption to check: Users often find tracking activities tedious.
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced filters and search functionality.
Assumption to check: Users may struggle with finding specific logs.
Validate with people who use this workflow before building.
Hypothesis 3
Provide visual graphs and summaries of milestones over time.
Assumption to check: Limited insights or analytics on baby growth.
Validate with people who use this workflow before building.
Hypothesis 4
Ensure real-time synchronization across devices and offline support.
Assumption to check: Some users may have issues with data syncing.
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
Track your baby's feeds, sleep, and diapers with ease. No complicated forms, no subscriptions, no ads. Just the essentials, done right. Nugget is built for exhausted parents at 3 AM. Big emoji buttons, detailed tracking when you need it, and beautiful insights that help you understand your baby's patterns. DETAILED TRACKING • Nursing timer with left/right side tracking • Bottle feeding with amount in oz • Sleep timer with start/stop and duration • Wet and dirty diaper logging • Weight tracking with growth charts • Add notes to any event GROWTH CHARTS • WHO growth standard percentiles (0-24 months) • See your baby's weight compared to 3rd, 15th, 50th, 85th, and 97th percentiles • Track progress over time with beautiful visualizations • Works for both boys and girls SMART INSIGHTS • Daily and weekly feeding charts • Sleep pattern visualization • At-a-glance stats: time since last event, daily totals • See trends over time with beautiful Swift Charts SMART REMINDERS • Customizable feeding reminders • Get notified when it's time to feed • Never miss a feeding again NATIVE iOS FEATURES • Siri Shortcuts: "Hey Siri, log a feeding" • Home screen widgets with live timer status • iCloud sync across all your devices • Works offline, syncs when connected MORE FEATURES • Support for multiple babies • Light & dark mode • Long-press to log events from earlier • Undo accidental taps No account required. No subscription. Just buy once and track forever. Made with love by Pug Labs.
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
Redux
React Navigation
Firebase
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.
