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
Monument Valley
** Apple Game of the Year 2014 **
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
16,699 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 included17 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 Monument Valley: map the core Games 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
Introduce a level editor or user-generated content.
Assumption to check: Limited levels can lead to user disengagement.
Validate with people who use this workflow before building.
Hypothesis 2
Provide optional hints or easier modes.
Assumption to check: Some puzzles can be overly challenging, causing frustration.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate a storyline or character development.
Assumption to check: Lack of narrative or context can detract from immersion.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize rendering and simplify graphics for lower-end devices.
Assumption to check: Performance issues on older devices.
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
** Apple Game of the Year 2014 ** ** Winner of Apple Design Award 2014 ** In Monument Valley you will manipulate impossible architecture and guide a silent princess through a stunningly beautiful world. Monument Valley is a surreal exploration through fantastical architecture and impossible geometry. Guide the silent princess Ida through mysterious monuments, uncovering hidden paths, unfolding optical illusions and outsmarting the enigmatic Crow People. Ida's Dream now available. Forgotten Shores: Eight new chapters of adventure and illusion available now as a separate purchase. Buy or download Monument Valley now and you’ll also get our fully animated iMessage sticker pack, including 5 stickers exclusive to players! Only available on iOS10 and above. ======= "This might be the most beautiful iPad game of 2014" - Wired "Brilliant design... stayed with me like a dream I didn't want to forget" 9/10 - Polygon "The most sublime hour my iPad has ever given me... and the value of such a thing is incalculable" - Kotaku "Monument Valley stuns with its serenity... each screen is a work of art" - Huffington Post "Almost impossibly gorgeous... a feast for your senses" 5/5 - Touch Arcade ======= BEAUTIFUL Inspired by minimalist 3D design, optical illusions and palaces and temples from around the world, every monument is a unique, hand-crafted world to explore. EASY TO USE Twist and drag to reshape the world and help Ida to explore. Designed to be easy for everyone to pick up, enjoy and complete. SOUND Audio reacts to your manipulation of the world to provide a surreal and beautiful soundscape. Best experienced with headphones. iCloud Synchronize your game across all your devices. ** Monument Valley is designed for iPhone 4 and above. It is NOT compatible with iPod Touch 4th Generation.
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.
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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.
