# Toybox: SwiftUI & Metal Lab — A playground of visual effects

> A playground of visual effects (iPhone/iPad app by Takehito Koshimizu.)

- Source: https://appshunter.io/ios/app/toybox-swiftui-and-metal-lab/id6743644224 (this page in markdown: same URL + `.md`)
- Developer: [Takehito Koshimizu](https://appshunter.io/developer/1127167493)
- Category: Graphics & Design, Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 18.2 · 10 MB
- Languages: English
- Released: 2026-04-28
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/toybox-swiftui-and-metal-lab/id6743644224/reviews.md

## What is Toybox?

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.


## Version history (last 3 releases)

### 1.2.0 — 2026-05-09

Stability improvements and minor fixes.

### 1.0.1 — 2026-04-29

Fixed a navigation crash that could occur around thumbnail views, improving overall stability.

### 1.0 — 2026-04-28

No release notes.

## More apps by Takehito Koshimizu

- [TicTacToe Simple Quick Play](https://appshunter.io/ios/app/tictactoe-simple-quick-play/id6470109613)

All apps by Takehito Koshimizu: https://appshunter.io/developer/1127167493

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*