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.
MDCollections is a fully customizable inventory and collection manager
$3.99 · In-app purchases
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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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 MDCollections: 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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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: Users often find it hard to manage large collections efficiently.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited functionality for item management.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Users complain about lack of cloud backup options.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No clear onboarding process for new users.
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.
MDCollections is a fully customizable inventory and collection manager. Whether you're cataloging books, tools, trading cards, wine, electronics, or anything else. MDCollections adapts to how you think about your stuff. Know where it is: Organize items by location, down to the specific shelf or container. Generate and print QR code labels so you can scan a box and instantly see what's inside. Know what you have: Create unlimited collections with fully customizable properties: text, numbers, dates, tags, currency, images, and documents. Track exactly what matters for each collection. Add items fast: Scan a barcode to auto-fill product details from online databases. Simplify the capture interface to add items in seconds. Find it instantly: Search, sort, and filter across all your collections. View rich item details with images, notes, and every property at a glance. Own your data: Everything is stored as plain Markdown files with YAML frontmatter, ight on your device. No cloud lock-in, no account required. Compatible with any app that reads Markdown. View it your way: Group items into stacks by any property. Choose custom thumbnails. Sort, filter, and search across everything you own. No subscriptions. No ads. No tracking.
Written user reviews are not shown here. Check current App Store reviews >
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.