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.
Fun painting app, based on Unlimited Layers with Blend Modes and Masks
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.
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.
JavaScript is required to complete mailbox verification.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for iArtbook: map the core Graphics & Design workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Affiliate link: CloneChart may earn a commission at no extra cost
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 brush and tool options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Performance issues with large files
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: User interface can be confusing for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent sharing functionality
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.
Fun painting app, based on Unlimited Layers with Blend Modes and Masks Any brush can be used with 3 professional-level realtime technologies of calligraphy: Line Delay, Rope Stabilization and Correction, combine it for best results. With 100% calligraphy the line will be very smooth even if you are drawing with your finger Brushes can be Dry, Glossy and Wet. There are 3 types of Wet brushes: Without Pull, With Pull and Super-Precise. Any brush can instantly became Smudge-brush with Finger instrument. Textured brushes are also supported If you like to draw with simple round brush, there are quick settings for Hardness, Ovality & Rotation of your brush shape. Or, if you prefer realistic brushes, large Pro-Library of shapes (>1000 textures) can be used to create new brushes of any type Apple Pencil is fully supported, including Touch Force, Tilt, Azimuth and Predicted Points. There are settings for each Pencil ability. You also can disable finger-painting, if you never use it Gestures: 2-fingers tap for Undo and 3-fingers tap for Redo any action For color choosing there are 2 different Color Pickers and Palettes with Gradient Mixer. Use long-pressure gesture for quick color choosing Time-Lapse video recording is enabled by default FEATURES LIST: Create Animation: * Unlimited frames of animation * Multiple animation layers * Export to mp4, hevc, gif, apng Learn How to Draw by copying Professional Art: * Use any Painting or Sketch as a Lesson * Tap left side of screen to switch between your painting and the lesson * 4 lesson types: "Equal size", "First Layer", "Horizontal split", "Vertical split" Brushes: * Preinstalled professional brushes * Glossy brushes * 50+ brush settings * Shapes library * Calligraphy * Apple Pencil support * Smudge brushes with 3 different smudge technologies * Export-import of brushes * Dynamic shape * Realistic brushes * Any brush can became a smudge brush with Smudge tool Colors: * 2 Color Pickers * Color mixer * Palettes * Import/Export of palettes Interface: * Right and left handed interface * Light or dark interface * Custom interface color Layers: * Unlimited layers * Dynamic ssd/operative memory using for layers * Masks * Clear / Fill / Select / Sort / Duplicate * Blend modes * Opacity and visibility * Import any image as a layer * Transform without loosing image quality Gestures: * 2-Fingers tap for Undo * 3-Fingers tap for Redo * Long pressure for quick color choosing * Bucket Tool: Drag the Color circle onto the canvas * Only-gestures control with Swipes Advanced: * Flip canvas horizontally * Time-Lapse video recording * Transform instrument * Selection tool * PNG with transparency creation
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.