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.
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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 Caffeinate AI: map the core Developer Tools 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 functionality compared to established coding tools
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in generating accurate code snippets
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor user onboarding experience
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of customization options for snippets
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.
Experience intelligence on caffeine. Caffeinate AI is an AI agent orchestration app that lets you run Claude Code, Codex, and Gemini CLI on your Mac — and control them remotely from your iPhone via iCloud. ORCHESTRATE AI AGENTS Run three of the most powerful AI coding agents from a single app: - Claude Code (Anthropic) — Multi-turn agentic conversations with image analysis and multi-file context - Codex (OpenAI) — Natural language to code with vision capabilities and multi-language support - Gemini CLI (Google) — Multimodal AI with 1M+ token context and Google Search grounding Choose from 3 orchestration modes: - Basic Mode — Full manual control. Write prompts, review output, execute step by step. - Advanced Mode — Auto-execute with your selected agent. Voice-first workflow with infinite mode for hands-free coding. - Conversational Mode — Chat-style AI terminal with multi-turn context, summary auto-append, and inline code preview. CONTROL YOUR MAC FROM iPHONE Queue AI agent commands from your iPhone. They sync via iCloud and execute on your Mac automatically. Get real-time status notifications when commands finish. - Write code prompts on the go - Commands sync instantly via iCloud - Terminal opens automatically on Mac - Live status updates on both devices FULL PRODUCTIVITY SUITE More than just AI agents: - Calendar — Week and day views with drag-and-drop scheduling, recurring events, and project color coding - Pomodoro Timer — Per-task focus sessions with customizable cycles and sound notifications - Analytics Dashboard — Completion rates, streaks, time tracking, and per-project health scores - Projects — Organize work into projects with nested task lists, 14 template categories, and archiving - Voice Input — Native speech-to-text dictation for hands-free task creation - Summary Styles — 7 built-in output templates plus custom styles - iCloud Drive Output — All generated code saved to your iCloud Drive 100% PRIVATE We collect ZERO data. No servers, no tracking, no analytics. All your tasks, lists, and files stay on YOUR devices. iCloud is only used to sync between your own iPhone and Mac. - Zero data collection - Local-first architecture - No external servers - macOS companion app available at caffeinate.ai Download Caffeinate AI and start orchestrating AI agents today.
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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.
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.