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
Berenstain - BIG Bedtime Book
Join the Bearenstain Bears in this interactive book app collection as Mrs
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
28 ratings · Top 5%
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 included16 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 Berenstain - BIG Bedtime Book: 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 user-generated stories or a community feature.
Assumption to check: Limited story selection, users may finish quickly.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the paywall and clarify benefits.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Implement more robust audio handling and testing.
Assumption to check: Audio playback may be buggy for some users.
Validate with people who use this workflow before building.
Hypothesis 4
Streamline navigation and improve user guidance.
Assumption to check: Navigation can feel cluttered.
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
Join the Bearenstain Bears in this interactive book app collection as Mrs. Grizzle shares her beloved bedtime stories as she babysits the cubs! Explore pictures, learn new vocabulary, and personalize the story with your own narration. Enjoy Little Red Grizzly Hood, The Three Billy Goats Gruff Meet the Bogg Brothers, The Three Little Cubs and the Big Bad Pig, The Gingerbread Bear, Goldibear and the Three People, and The Little Red Hen, all in one convenient place. Explore the Story: - ENCOURAGE literacy skills with highlighted narration - LEARN new vocabulary with tappable words and pictures - RECORD your own narration & share it with others - SELECT a scene with easy-to-use navigation - KEEP kids in the story with parental controls Designed for children ages 4-8 -Little Red Grizzly Hood: A little cub visits her grandmother in the woods and encounters a very tricky wolf. -The Three Billy Goats Gruff Meet the Bogg Brothers: Three goat brothers are determined to outsmart the hungry inhabitants under the bridge. -The Three Little Cubs and the Big Bad Pig: The three little cubs see how their special houses, built from their favorite treats, fare against a very hungry pig. -The Gingerbread Bear: Grandma and grandpa bear are in for a surprise when their freshly baked gingerbread bear hops right off the pan! -Goldibear and the Three People: Goldibear strays too far outside the forest and encounters some terrifying creatures - people! -The Little Red Hen: The little red hen enlists the help of the duck, the cat, and the pig to plant and harvest the wheat. ------------------------------------------------------------------------ The Reviews Are In: - "Highly Recommended!" - Digital Storytime - Top 10 Paid iPad Book Apps - April 2012 ------------------------------------------------------------------------ We'd Love To Hear From You! - Please share your thoughts in a review! Your experience matters to us. - Need tech support? Contact us at [email protected] - Say hello to us on FB! facebook.com/oceanhousemedia Official HarperCollins licensed app: www.harpercollinschildrens.com
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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
Redux
React Navigation
Expo AV
React Native Paper
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.
