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
Brotato:Premium
A top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
3,657 ratings · Top 15%
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 included18 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 Brotato:Premium: 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 more diverse enemy types and environments.
Assumption to check: Repetitive gameplay can become stale over time
Validate with people who use this workflow before building.
Hypothesis 2
Add more skins, upgrades, and character stats.
Assumption to check: Limited customization options for characters
Validate with people who use this workflow before building.
Hypothesis 3
Provide more value in free version and fair pricing for in-app purchases.
Assumption to check: In-app purchases can feel predatory
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate multiplayer or social features to enhance engagement.
Assumption to check: Lack of social features like friend challenges
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 top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives. The sole survivor: Brotato, the only potato capable of handling 6 weapons at the same time. Waiting to be rescued by his mates, Brotato must survive in this hostile environment. 【Features】 · Auto-firing weapons by default with a manual aiming option Fast runs (under 30 minutes) · Dozens of characters available to customize your runs (one-handed, crazy, lucky, mage and many more) · Hundreds of items and weapons to choose from (flamethrowers, SMGs, rocket launchers or sticks and stones) · Survive waves lasting 20 to 90 seconds each and kill off as many aliens as you can during that time · Collect materials to gain experience and get items from the shop between waves of enemies · Accessibility options: tweak the health, damage and speed of enemies so the difficulty is right for you *Cloud storage is only available while online. You can play offline, but your data will not be saved to the cloud. Please take note of this. 【Contact Us】 YouTube: https://www.youtube.com/channel/UCtaSitbjWjhnlzuX2ZLjtUg Discord：@Erabit or join via https://discord.gg/P6vekfhc46 Twitter：@erabit_studios Tik Tok：https://www.tiktok.com/@brotato_mobile Facebook：@Brotato(facebook.com/brotatomobile) Instagram: https://www.instagram.com/brotato_mobile/ Reddit: https://www.reddit.com/r/brotato_mobile/ Email：[email protected]
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.
