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
The Lorax by Dr. Seuss
The best-selling Dr
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
1,721 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 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 The Lorax by Dr. Seuss: map the core Entertainment 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
Enhance interactivity with more animations and sound effects.
Assumption to check: Limited interactivity in some pages
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline mode for downloaded activities.
Assumption to check: No offline access to activities
Validate with people who use this workflow before building.
Hypothesis 3
Improve the visibility of what users get with purchases.
Assumption to check: In-app purchase clarity
Validate with people who use this workflow before building.
Hypothesis 4
Add more variety in activities and challenges.
Assumption to check: Repetitive activities
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 best-selling Dr. Seuss classic “The Lorax” comes to life with playful interactivity, delightful animations and fun activities! *** Parents’ Choice Award Silver Honor Winner *** *** Academic's Choice "Smart Choice Media" Award Winner *** *** Best New Apps - Apple *** FEATURES - Tap and drag to find playful surprises throughout the book - Find hidden stars on every page to reveal fun Activities - Read along with highlighting narration, read it yourself, or enjoy auto play - Explore new vocabulary by tapping words and pictures - Track minutes spent reading, pages read, and more in the Parents section ACTIVITIES - Play nine different mini-games like Memory Match, Jigsaw Puzzle, Word Search, Sequence, and more! - Find all 32 unique games hidden throughout the book - Enjoy activities again and again, directly from the main menu - Try to beat your high score and best time -------------------- Download today! -------------------- Oceanhouse Media is proud to celebrate over 15 years bringing Dr. Seuss’s beloved stories to the App Store! Trusted by millions of families. Official Dr. Seuss licensed App. Dr. Seuss Properties ™ & © 2016 Dr. Seuss Enterprises, L.P. All rights reserved.
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
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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.
