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.
Stop rewriting the same prompts.
$2.99
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 Promptuary: AI Prompt Manager: map the core Productivity 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.
Stop rewriting the same prompts. Promptuary keeps reusable prompts, fragments, and chains together, so the right text is ready when you need it. Save a prompt once, fill in the parts that change, and copy the finished text wherever you work. EVERYTHING IN ONE WORKSPACE Find prompts by category or search, keep favorites pinned, and edit any prompt with a tap. The Prompts view also keeps reusable fragments and multi-step chains close at hand. TEMPLATES THAT ADAPT Turn changing details into variables such as {{topic}}, {{language}}, or {{recipient}}. Promptuary creates a simple form, remembers recent answers when you choose, and builds the finished prompt for you. REUSE YOUR BEST WRITING Create fragments for instructions, roles, formatting rules, or your preferred tone. Add them to multiple prompts and update the shared text in one place. RUN REPEATABLE WORKFLOWS Combine prompts into chains for work that takes several steps. Move through each step, fill its variables, and copy the output as you go. WRITE WITH MARKDOWN Use the Markdown-aware source editor for clear structure while you write, then switch to Preview to see the formatted result. YOUR DATA, YOUR CHOICE Keep your library on the device or use iCloud. With iCloud enabled, Promptuary can share the same library with Promptuary for Mac. You can also import, export, and back up your library as JSON. HOW IT WORKS 1. Paste an existing prompt or create one from scratch. 2. Add variables, fragments, and categories as needed. 3. Fill, copy, and paste the finished text into any app. Promptuary is a focused prompt library, not a chatbot. There is no account, advertising, tracking, subscription, or connection to third-party AI services. Built for developers, writers, researchers, product teams, and anyone who uses the same carefully written instructions more than once. Download Promptuary and keep your best prompts ready.
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: Difficulty in managing a large number of prompts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of organization for prompts
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited search functionality
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No ability to sync with external services
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.