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.
Controls
$1.99
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 TerraCrest4: map the core Entertainment 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: Limited interactive features compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of customization options for user profiles
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Navigation can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Content discovery is not personalized
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.
Controls --------- · On Screen, Left Joystick, Right Fire and Undock ships. · Joystick & GamePad Xbox, PS, MFI Compatible. Description ------------ TerrA Crest4 is a classic arcade game that immerses players in a fast-paced, action-packed shoot 'em up experience. Set in the depths of space, players take control of a futuristic spacecraft armed with powerful weaponry. The game is played from a top-down perspective as players navigate their ship through vertically scrolling stages filled with hordes of enemy spacecraft, ground-based turrets, and other hostile entities. What sets TerrA Crest4 apart from other shoot 'em up games of its time is its unique transformation mechanic. Players have the ability to transform their spacecraft into three different forms: a jet, a robot, and a combined mode. Each form has its own advantages and drawbacks, offering players flexibility in adapting to different combat situations. The jet form provides increased speed and maneuverability, allowing players to dodge enemy attacks more easily. The robot form offers enhanced firepower, enabling players to unleash devastating barrages of bullets on their adversaries. The combined mode merges the strengths of both forms, offering a balance between speed and firepower. As players progress through the game, they encounter a diverse array of enemy types, each with their own attack patterns and behaviors. From agile fighter craft to massive boss enemies, TerrA Crest4 constantly challenges players to adapt and strategize to overcome increasingly difficult obstacles. Power-up items occasionally appear throughout the stages, granting players temporary enhancements such as upgraded weapons, shields, and bonus points. The primary goal of TerrA Crest4 is to survive for as long as possible while racking up points by destroying enemy forces. Players must navigate through multiple stages, each culminating in a challenging boss encounter. Successfully defeating these formidable bosses requires quick reflexes, precise aim, and strategic use of power-ups. Overall, TerrA Crest4 offers a thrilling and addictive arcade experience. Its blend of fast-paced action, strategic depth, and innovative gameplay mechanics solidifies its status as a beloved in the shoot 'em up genre. By pressing the second button the player can temporarily detach the currently equipped phases. If the player manages to collect all phases without losing any, the ship temporarily transforms into a flaming Phoenix and becomes invincible for the duration of the transformation. Beware with boss enemy. Good luck and enjoy!!
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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.