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.
App Overview
UI Playground
Craft the best iOS 26 user experience by choosing the appropriate interface components with the right customisation.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
2 ratings · Top 5%
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What's included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for UI Playground: map the core Developer Tools workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Our clone can offer more customizable properties for each component.
Assumption to check: Limited component customization options
Validate with people who use this workflow before building.
Hypothesis 2
Add features for sharing projects and collaborating with other users.
Assumption to check: Lack of user collaboration features
Validate with people who use this workflow before building.
Hypothesis 3
Optimize rendering and loading times for complex layouts.
Assumption to check: Slow performance with many components
Validate with people who use this workflow before building.
Hypothesis 4
Establish a consistent design system for all UI components.
Assumption to check: Inconsistent UI across components
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Craft the best iOS 26 user experience by choosing the appropriate interface components with the right customisation. Explore and customise native UI components to unlock endless possibilities for your app. Take it to the next level, by previewing a live component within the context of your app, simply by adding a screenshot image. Finally, export native code to share with developers streamlining development. FOR DESIGNERS Explore on the device, all the possibilities that each user interface component supports, exactly as it will work in a real app. FOR DEVELOPERS Learn SwiftUI backwards by first interacting with components on iPhone and then reading or applying the code in a real app. FOR PRODUCT OWNERS Convey your ideas faster by designing small interactions within the context of your app, without the commitment of implementation. FEATURES • Auto-save: Automatically save every customisation you make — never loose your work. • Save Multiple Drafts: work on the same component with different customisations. • Human Interface Guidelines: small instructions lead to a proper usage of components that respect HIG. • Design & Developer Docs: get more information about each component on Apple's website. • Semantic Colors: add system colors with a version for light and dark mode. • SF Symbols: add system symbols for an extra level of precision. • Guides: align components within the safe areas or highlight the component. • Grouped Components: advanced components lets you build an entire Settings area. • Save to iCloud: work on multiple devices without loosing the work. By purchasing this app, we will guarantee ongoing support for any OS updates that changes existing or brings new relevant main UI components. If you have any doubts or want to report an issue with the app, please feel free to reach us at [email protected] . TERMS OF SERVICE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
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Zustand
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BUILD KIT DIFFICULTY
Intermediate
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.
