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.
Mindustry is a factory-building game with tower defense and RTS elements
$1.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Mindustry: 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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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
Assumption to check: Steep learning curve for new players
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited multiplayer options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Resource management can feel overwhelming
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Occasional bugs during gameplay
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Mindustry is a factory-building game with tower defense and RTS elements. Create elaborate supply chains to feed ammo into your turrets, produce materials to use for building, and construct units. Command units to capture enemy bases, and expand your production. Defend your core from waves of enemies. Gameplay Features: - Use production blocks to create a wide variety of advanced materials - Defend your structures from waves of enemies - Play with your friends in cross-platform multiplayer co-op games, or challenge them in team-based PvP matches - Distribute liquids and fight constant challenges, like outbreaks of fire or enemy flier raids - Get the most out of your production by supplying optional coolant and lubricant - Produce a wide variety of units for automatic management of your base or assault on enemy bases - Set up assembly lines to construct armies of mechanized units - Use your units to square up against fully functional enemy bases Campaign: - Conquer the planets Serpulo and Erekir as you advance through 35 hand-made maps and 250+ procedurally generated sectors - Capture territory and set up factories to produce resources while you play other sectors - Defend your sectors from periodic invasions - Coordinate resource distribution between sectors via launch pads - Research new blocks to fuel progress - Invite your friends to complete missions together - 250+ technology blocks to master - 50+ different types of drones, mechs and ships Custom Games & Cross-Platform Multiplayer: - 16+ built in maps for custom games, in addition to two entire campaigns - Play co-op, PvP or sandbox - Join a public dedicated server, or invite friends to your own private session - Customizable game rules: Change block costs, enemy stats, starting items, wave timing and more - Full functional map editor with scripting support
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.