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.
Welcome to Stack Sort, the ultimate card sort experience designed to help you relax and organize your mind
Free · 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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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 Stack Sort: Color Puzzle: 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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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 levels and repetitive gameplay.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Ads can disrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent performance on older devices.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features.
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.
Welcome to Stack Sort, the ultimate card sort experience designed to help you relax and organize your mind. Much like the classic strategy found in Mahjong, this simple yet deep 3D brain teaser puzzle requires focus as you tap to move, connect, and stack your way through thousands of levels. If you crave the satisfaction of a perfect match, our minimalist zen atmosphere is the perfect place to master your logic. The Most Satisfying Way to Relax Every card sort level is a colorful journey toward satisfaction. To relax, simply tap a card and move it to a matching stack. As you organize each colorful card, you will feel a sense of relaxing zen similar to clearing a Mahjong board. The satisfying ASMR sounds of a card being placed on a stack provide instant satisfaction in this puzzle game. Whether you want to organize a quick card pile or stack for hours, the relaxing card sort mechanics ensure you find satisfying zen in every move. Organize Your Way to the Top To master the card sort challenge, you must organize every colorful card with a clear mind. Each stack you organize brings more satisfying color harmony to the game, offering a fresh twist on the tile-matching logic seen in Mahjong. To relaxing players, this card sort game is a top rate puzzle because you can organize a colorful stack at your own pace. If you want to relax, just sort one card at a time. The more you organize, the more satisfying the color flow becomes. Stack a card, organize the color, and enjoy the relaxing satisfaction of a clean board. Features of Stack Sort: Organize and stack in a simple 3D zen environment. Satisfying card sort puzzle that helps you relax and organize. A modern alternative to Mahjong for those who love colorful themes. Relaxing color stacks designed for satisfying zen gameplay. Master the card sort to organize a colorful stack of rewards. Find Your Zen Today When you organize a card, you organize your stress away. This card sort is the most relaxing way to stack and match, perfect for Mahjong fans who want a new challenge. Every colorful card you sort increases your satisfaction. Relax as you stack a card; relaxing gameplay is our goal. Organize every stack, sort every color, and feel the satisfying zen of Stack Sort. To relax, you simply need to organize a colorful card. This satisfying card sort loop lets you relax, organize, and stack until you reach total satisfaction. Match the color chaos today! Stack each card with a relaxing mind. The satisfying card sort logic is here to help you relax and organize. Stack a colorful card now and find your zen satisfaction. For those who enjoy a Mahjong style of play, these relaxing color puzzles allow you to match a card and stack for satisfying zen. Sort, stack, organize, and relax—it is that simple. Ready to start? Organize the card sort now. Stack the colors, relax your mind, and discover why this is the most satisfying colorful card puzzle game available. Organize your stack, relax with a card, and find satisfaction in every color sort!
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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.