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
Doom of Titanic
A outline of a film plot where the main character is the legendary liner 'Titanic.' Unusual interpretation of the popular story with lots of illustrations.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included14 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 Doom of Titanic: 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
Implement a feature to allow user submissions of books.
Assumption to check: Limited book selection and variety
Validate with people who use this workflow before building.
Hypothesis 2
Add social sharing options and reading groups.
Assumption to check: Lack of social features for sharing reads
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline reading mode for downloaded books.
Assumption to check: No offline reading capability
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the subscription process and make it more transparent.
Assumption to check: In-app purchase complexities
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
A outline of a film plot where the main character is the legendary liner 'Titanic.' Unusual interpretation of the popular story with lots of illustrations. A idea to write the scenario for the film where the drama‘s protagonist of the doom of the 'Titanic' was not a person but the ship came to me many years ago. Do you remember with what fanfare promotion the movie 'Titanic' then gathered almost all 'Oscars'? But this movie, in fact, is a banal melodrama that unfolds in the scenery of the legendary liner. In this movie the most 'Titanic' assigned the unenviable role, because such love stories can happen anywhere. Agree the liner was simply spectacular attraction for spectators. It is a pity own tragedy of liner happened on human stupidity and arrogance stayed behind. Their ideas about this, I remembered quite by accidentally when six o'clock bored at Munich airport waiting for a connecting flight. Came across newspaper, where she mentioned an old disaster. The reason for publication was the centenary of the tragic events.\n\nAnd from that moment I no longer regretted my confinement in the transit hall of the airport. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: http://books.virenter.com/policy.php
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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
Zustand
React Navigation
React Native Reanimated
BUILD KIT DIFFICULTY
Starter
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.
