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
PopOut! The Night Before Christmas
The sequel title to the massively popular interactive book sensation PopOut! The Tale of Peter Rabbit
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
25 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.
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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 included15 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 PopOut! The Night Before Christmas: map the core Books 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
Add more interactive games or activities related to the story.
Assumption to check: Limited interactivity compared to other children's apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement clearer navigation cues and onboarding instructions.
Assumption to check: Some users find the navigation unclear
Validate with people who use this workflow before building.
Hypothesis 3
Optimize performance for lower-end devices.
Assumption to check: Occasional crashes on older devices
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize text size, background music, and animation speed.
Assumption to check: Limited customization for user preferences
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
The sequel title to the massively popular interactive book sensation PopOut! The Tale of Peter Rabbit. See William Denslow's masterful illustrations brought to life with innovative pull-tabs, spin-wheels, and elements that bounce and spring with the touch of a finger. Listen to "O Christmas Tree" beautifully performed on piano while you read and interact with each page of the book. Explore every scene and discover the many delightful life-like interactions at your fingertips. FEATURES ======== * Touch and drag objects to make them “spring” to life or tilt to watch them slide and move * Objects that literally PopOut!™ of the page to delight you and your family * Beautiful vocal performance, music, and sound effects will immerse you in the story * "Read to Me" with word highlighting to help improve reading skills * Or read it yourself and hear individual words and page numbers spoken with the tap of a finger * 50 pages of authentic text and illustrations with realistic page turning interactions just like the original hardcover book REVIEWS ======= "One of the best holiday apps this season. [5 stars]" - Common Sense Media "This is a lovely app that looks great and will please all ages" - TUAW "A truly wonderful interactive experience for the holidays!" - PadGadget "It is simply beautiful, rich in imagination and interactivity." - idboox.com "This holiday tale is sure to delight young children and impress adults with its classic, turn-of-the-last-century artistic stylings and its full utilization of the iPad’s capabilities." - Techvibes "A wonderful interactive experience that is perfect for children of any age." - iPadNGravy.com Visit us: www.loudcrow.com Follow us: twitter.com/loudcrowinc Like us: facebook.com/loudcrow
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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-native-reanimated
expo-sharing
expo-navigation
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.
