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.
Make Mandalas
$0.99 · 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.
Kit ready. Verify your email to download it.
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 SpiroDoodle: 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 drawing tools compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Saving drawings can be cumbersome
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No social sharing capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of undo/redo 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.
Make Mandalas. Create limitless designs. Unleash your creativity. A cross between the old spirograph and finger painting. Take a look at the example images to see what kinds of great designs you can make. Make symmetrical patterns with just a swipe of your finger across the screen. This addictive application will captivate you for hours while you explore new ways to make fun designs. Also a great way to explore ideas for logos or tattoos. Very easy to use. Detailed instructions are included in the application's help section and at www.spirodoodle.com/instructions. You can save your doodle to your photo library. From the photo library you can email it to friends and set it as the iPhone background. Keep your children entertained for hours. Start up your iPod music and then open SpiroDoodle. You can continue listening while you create. See what SpiroDoodlers have to say: I love this app it's great. 5 star app! Great distraction app for my kids. It is so addicting. My boss played it all day. Excellent Application. This was way easy to use. Rock solid. Features: - choose from 1 to 36 lines to draw radially around the screen. - select from millions of colors or let the colors come randomly. - save your creations and share them with friends on social media or use as backgrounds. - a special mirror effect that makes each stroke you do symmetrical, much like a kaleidoscope. - fill areas with the selected color, or random colors. - draw with different line widths.
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.