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
Last Z: Survival Shooter
In an apocalyptic world overrun by the undead, where the fate of humanity hangs in the balance amid diminishing living spaces, will you rise as the hero we need to reshape the destiny of humankind? Uncover the adventu...
Free · In-app purchases
OVERALL US RANK
#51
Grossing · all categories
REVENUE (Est)
$796K/mo
$453K - $1.1M
RATING
★ 4.8
103,401 ratings · Top 5%
Evidence scope: #51 is the current overall US Grossing chart position. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
Build your own version
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/
Preview a sample Build Kit No email needed
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 Last Z: Survival Shooter: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
In an apocalyptic world overrun by the undead, where the fate of humanity hangs in the balance amid diminishing living spaces, will you rise as the hero we need to reshape the destiny of humankind? Uncover the adventure of Last Z: Survival Shooter – your destiny awaits! Dodge & Shoot In the heart of the zombie-infested apocalypse, survival is not just a choice but an exhilarating stage, challenging the prowess of dodging and shooting skills. Navigate through waves of relentless undead, strategically evading their onslaught while honing your precision shooting. Each dodge and shoot propel you closer to victory, earning you abundant rewards in this thrilling game of wits and reflexes. Explore & Expand Brace yourself for an adrenaline-fueled journey where the apocalypse is your playground for exploration and expansion. Explore abandoned areas, uncover hidden treasures, grow from epic battles, and forge bonds with reliable companions who accompany you through thick and thin. Every step of the way brings you closer to establishing your own doomsday shelter. Survive & Thrive In Last Z: Survival Shooter, survival marks merely the starting point as you endeavor not just to survive but to thrive amid impending annihilation. Through exploration, expansion, and evolution, the world transforms into a vast canvas of growth and opportunity. Your prowess ascends across economic, technological, and military realms, unlocking boundless potential. And your burgeoning shelter will ultimately emerge as a beacon of hope for human civilization. Explore, thrive, and redefine the meaning of survival in this gripping saga. Download Last Z: Survival Shooter now, plunge into the ultimate test of survival, and unveil the depths of your courage to conquer the apocalypse!
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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 diverse missions and environments.
Assumption to check: Repetitive gameplay can lead to boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Offer cosmetic items instead of gameplay advantages.
Assumption to check: In-app purchases can be intrusive.
Validate with people who use this workflow before building.
Hypothesis 3
Implement multiplayer modes or social sharing options.
Assumption to check: Limited social features.
Validate with people who use this workflow before building.
Hypothesis 4
Create a more rewarding free experience to retain players.
Assumption to check: Difficulty balancing free and paid content.
Validate with people who use this workflow before building.
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.
