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
GlassKit: Liquid Glass APIs
Stop rebuilding one-off sample projects just to compare iOS 26 Liquid Glass APIs.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 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 GlassKit: Liquid Glass APIs: 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
Focus on a clean, easy-to-navigate UI with clear documentation.
Assumption to check: Lack of user-friendly design in developer tools can lead to confusion.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a dashboard that visually represents usage stats.
Assumption to check: Difficult to track API usage and limits.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate a help section with FAQs and contact support options.
Assumption to check: Limited access to support and resources.
Validate with people who use this workflow before building.
Hypothesis 4
Provide tutorial guides and examples for first-time users.
Assumption to check: High entry barrier for beginners to understand APIs.
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
Stop rebuilding one-off sample projects just to compare iOS 26 Liquid Glass APIs. GlassKit is a focused, offline reference for developers who want to inspect effects, tune key parameters, and copy matching SwiftUI code. WHAT YOU CAN DO • Browse 22 live API examples across Glass, Containers, Transitions, Controls, Surfaces, and Bars • Adjust style, tint, intensity, shape, corner radius, interaction, and spacing in supported demos • See SwiftUI code update with your choices • Copy code directly from each detail page • Search and filter the complete catalog • Open the corresponding Apple Developer documentation HOW IT WORKS 1. Find an API by section or search. 2. Open its live preview and adjust supported parameters. 3. Copy the generated SwiftUI code into your project. One paid download includes every catalog entry and feature. There are no accounts, ads, in-app purchases, or subscriptions. GlassKit is an independent developer reference and is not an official Apple product. Liquid Glass, SwiftUI, iOS, and related technology names are Apple technology names used descriptively. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://apps.caen.co.jp/glasskit/privacy/ Support: https://apps.caen.co.jp/glasskit/support/
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
React Native
Expo
Zustand
Axios
React Navigation
Expo Secure Store
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.
