Toybox: SwiftUI & Metal Lab
A playground of visual effects
Free · Designed for iPad. Not verified for macOS.
Try Toybox instantly with App Clip — no install needed. Launch Metal shader effects straight from Safari. The full app holds 80+ hand-crafted SwiftUI & Metal experiments.
Toybox is a hand-crafted showcase of SwiftUI animations and Metal shader experiments — a small sandbox where each screen is an interactive visual idea you can open, run, and play with.
Open the app and you're greeted with a list of screens. Tap one and a self-contained piece comes to life: cellular automata, generative patterns, particle waves, mosaics, badge animations, the Apple logo reimagined, and many more. Every screen is a single, focused experiment built with modern SwiftUI and, where it makes sense, custom Metal shaders.
What's inside
• Dozens of bite-sized visual experiments
• SwiftUI animations built on the latest APIs
• GPU-driven effects written in Metal Shading Language
• Adaptive layout that feels at home on iPhone, iPad, and Mac
• Tag-based filtering to find effects by category
Who it's for
Designers looking for a moodboard of motion and graphics ideas. Developers studying how a particular SwiftUI or Metal technique is put together. Anyone who simply enjoys playing with visual toys.
Built with
• SwiftUI and the @Observable model
• Metal shaders compiled by a Swift Package Manager build plugin
• A modular, package-driven architecture
Try it before you install — App Clip
Not ready to commit to a download? Open Toybox as an App Clip straight from a Safari Smart App Banner or a shared link. No App Store visit, no waiting — a curated selection of Metal shader effects runs immediately. If you like what you see, the full gallery is one tap away.
Toybox is open-source and growing — new screens are added regularly. If you're curious about what modern Apple platforms can do visually, open it up and start tapping.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Version 1.3.0
New screen
• Game Boy Mosaic: Turns the image into a circular-dot mosaic using the original Game Boy's green palette. Adjust the cell size and the number of colors.
Better on foldable iPhone and iPad
• Folding or unfolding the device now keeps the current screen and its state.
• Canvas and controls switch between stacked and side-by-side layouts based on the available space, so they fit narrow split views and landscape.
• The selected item in the sidebar is now easier to see.
Other improvements
• A refreshed app icon.
• Fixed layout glitches when rotating or resizing, and a crash on some screens.
The developer, Takehito Koshimizu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Takehito Koshimizu
- Size
- 13.4 MB
- Category
- Graphics & Design
- Compatibility
Requires iOS 18.2 or later.
- iPhone
Requires iOS 18.2 or later. - iPad
Requires iPadOS 18.2 or later. - Mac
Requires macOS 15.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.2 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Takehito Koshimizu