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
Riley: Child Development Coach
Meet Riley — the baby development coach and milestone roadmap trusted by 35,000+ families
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
780 ratings · Top 15%
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
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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 included18 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 Riley: Child Development Coach: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Meet Riley — the baby development coach and milestone roadmap trusted by 35,000+ families. See your child's path ahead, take fun quizzes, find local age-appropriate events and understand how you can support your child at every stage. HOW IT WORKS - You share your parenting goals and style. Riley gives you a customized milestone 'storyline' for your child's development with skills to check off, guides, articles and more - Talk to Riley anytime you need support - why is my baby fussy right now? Is this much crying normal? Jet lag nap schedule for travel? Riley is empathetic, tailored to you and available at 3AM - Riley provides you with stage-based insights, tips and activities to help your child learn and develop cognitive and physical skills. You can also ask Riley to save memories of your child so that you never forget when they took their first steps, kicked a ball, and more - For newborn parents- track sleep, feeds, diapers, and growth in seconds, and get customized sleep schedules built on demand - For expecting parents - be prepared on day one, whether it be asking Riley questions about the first 48 hours with baby, or how to prepare your current little one for a new sibling REVIEWS "A must have for new parents" “The parenting partner you didn’t know you needed" “I love chatting with Riley. Riley is smart, empathetic, and makes me feel supported as a young mom who has never done this before" FEATURED IN - The Bump, Glamour, TechCrunch, NBC, Axios and more AWARD WINNING - 2025 AI Breakthrough Award WHY PARENTS CHOOSE RILEY • 24/7 pediatric advice chat — empathetic, evidence-based answers from our pediatrician-built knowledge base • All-in-one baby & sleep tracker — log sleep, naps, growth, nursing, bottles, and diapers with one tap. • On-demand sleep schedules — use “Golden Window” to get a sleep plan that adapts as your baby grows. • Daily cognitive skill-building ideas — age-appropriate activities & local outings curated just for you. • Milestone tracking — tell Riley about recent milestones your child has achieved, and Riley will create personalized activities related to your child’s progress PARENT-LOVED FEATURES • Share logs with partners & caregivers in real time • Generate bedtime stories featuring your child’s name & favorite themes • Track progress from newborn through grade school in one secure place Download Riley for free today Riley is not a medical professional and is not a replacement for any medical diagnosis or treatments. Riley cannot, and does not intend to provide medical diagnoses. Interaction with Riley does not constitute a medical professional-patient relationship. Please do not avoid or delay medical attention as a result of a statement from Riley. When you use Riley chat, we may send the transcripts of chats to our AI partners Anthropic and OpenAI in order to personalize your experience, but data is NEVER used by partners for training. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Written user reviews are not shown here. Check current App Store reviews >
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
Improve customization algorithms for better user experience.
Assumption to check: Limited personalized content based on user inputs
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the subscription process with clearer options.
Assumption to check: Subscription management can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Add forums or chat options for users to connect.
Assumption to check: Lack of community features or support
Validate with people who use this workflow before building.
Hypothesis 4
Implement a better filtering system to enhance resource discovery.
Assumption to check: Information overload with too many resources
Validate with people who use this workflow before building.
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.
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BUILD KIT DIFFICULTY
Advanced
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.
