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.
In a dark world, a new adventure begins
$9.99
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.
Your first Build Kit is free with a verified email.
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 Vampire Crawlers: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
In a dark world, a new adventure begins. Explore maps, level up powers, kill monsters. Find treasures. From the somehow triple-BAFTA‑winning creators of Vampire Survivors, Vampire Crawlers: The Turbo Wildcard from Vampire Survivors turns the snowballing thrill of Survivors into a hyper turn‑based, card‑driven BLOBBER with rogue-lite elements. Build busted decks, explore familiar dungeons from a new perspective, and unleash world‑ending combos. Either take your time and be tactical, or play turns as fast as you humanly can: The outcome is always accurate, we call it hyper for a reason! What is this game about Snowballing, turn‑based carnage: Play cards in ascending mana order to land combos; each step multiplies the next card’s effect. Use Wilds to extend the stack and keep going to 10, 20, 30… Can you reach infinite? Pick your pace: Either take your time and be tactical, or play turns as fast as you humanly can: The outcome is always accurate, we call it hyper for a reason! Deck-Building: Accumulate experience and level up to gain new cards, headbutt chests for customization gems and power‑ups; chase weapon evolutions and summon survivors to trigger cascade of effects and break the game. Crawling: Explore multi‑floor dungeons packed with something seldom seen in Vampire Survivors: functioning walls. And then all sorts of unique treasures and interactions. Find the shovel to dig into the next floor, that will most likely take place in the clouds! Starting Tips: - Try different Crawlers, each one changes your deck. - Visit the village after every run and remember to buy Power-Ups. - Play cards in ascending mana to trigger combos.
Written user reviews are not shown here. Check current App Store reviews >
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: Limited character customization options.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Repetitive gameplay can become boring.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Leaderboard lacks social interaction features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchases are limited, affecting monetization.
Validate with people who use this workflow before building.
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.
Not assessed in a Build Kit yet.
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.