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
7Fables - Interactive Fables
7Fables is an interactive storybook featuring seven carefully illustrated nautical tales
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
5 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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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 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 7Fables - Interactive Fables: 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
Expand story library with user-generated content.
Assumption to check: Limited story selection compared to other apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline mode for downloaded stories.
Assumption to check: No offline access for stories
Validate with people who use this workflow before building.
Hypothesis 3
Simplify subscription options and clarify benefits.
Assumption to check: In-app purchases can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Enhance story interactions with more choices and outcomes.
Assumption to check: Limited interactivity in stories
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
7Fables is an interactive storybook featuring seven carefully illustrated nautical tales. Each fable offers branching narratives where your choices shape the story's outcome. Explore a new, hand-painted world inspired by classic cartographers and writers, from sea monsters lurking in uncharted waters to mysterious islands waiting to be discovered. Every illustration is rendered in watercolor, bringing these timeless tales to life. FEATURES: - Seven original fables with nautical themes - Choose-your-own-adventure storytelling with multiple paths and endings - Hand-painted watercolor illustrations throughout - Author voiceover narration - Original music score - Interactive island map to navigate between stories TALES INCLUDE: - Black Pot - Blossoms - The Piglet Disciple - The Egg - Tortoise and Monkey - And more... 7Fables draws inspiration from Aesop, the Brothers Grimm, and folklore traditions from around the world, reimagined for a new generation of readers and adventurers. Perfect for readers of all ages who love fables, fairy tales, and stories where their choices matter.
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
Supabase
react-navigation
@supabase/supabase-js
react-native-reanimated
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.
