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Big red LED digits allow you to see the timer even at great distance so you are free to move while you give the talk of your life. SpeakerClock emulates the famous countdown clock that all speakers at TED conferences need to adhere to.

The latest version is a universal app with HD-support for iPad, multiple presets and lots of usability enhancements. New portrait support allows you to put your iPhone/iPad in the cradle and still use SpeakerClock. Now the whole screen flashes if you transition into a new phase of your speech.

The Latest From the Cocoanetics Blog

May 02, 2026

An Interpreter for Swift

A few days ago I introduced SwiftBash — a sandboxed bash interpreter written in pure Swift. At the end of the four-green-checkmarks post I promised the next instalment would be about something else: SwiftScript, the same idea but for Swift itself.

It’s exactly that. Real Swift syntax, walked by a tree-walking interpreter, no LLVM, no codegen, no Process/fork/exec — meant for the places where Swift as a compiled binary isn’t an option.

After this success with an AST for bash, I figured, let’s up the game and try the same with Swift Syntax. My Claude Opus has proven time again that it has the necessary tenacity to make any stupid idea come true.

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Apr 30, 2026

Four Green Checkmarks: GitHub CI for macOS, iOS, Linux, and Windows

A few hours again, four little checkmarks lit up next to a commit in SwiftScript‘s GitHub Actions:

That’s a Swift package — written in Swift, depending on swift-syntax, exposing a Swift API — building and running its full test suite on all four platforms Swift officially supports today.

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Apr 27, 2026

Introducing SwiftBash

Every coding agent I use — Claude Code, Codex, even PI — leans on the same tool: /bin/bash. PI in particular runs almost exclusively through bash, no sandbox in sight. There’s a good reason for that. Bash is one of the most heavily represented languages in any pre-training corpus on the planet, and LLMs write it fluently. If you give a model a file to manipulate, a folder to inspect, or a one-shot pipeline to assemble, the answer that falls out is almost always a few lines of shell.

The downside is the friction. Unless you live in YOLO mode, you spend half your day clicking Allow on find, grep, sed, and cat prompts. Codex in the cloud sidesteps this by spinning up a fresh container per task. On my Mac, both Codex and Claude Code happily edit my actual files — and even with git worktrees, I’ve ended up with stray uncommitted changes on main more than once.

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Who is Cocoanetics?

The word Cocoanetics comes from the words Cocoa (the framework we use to program iOS apps) and Genetics (to build, make up). It simply states that we have living and breathing iOS development a level even deeper than “in your blood”.

Our apps and parts are often experiments, mostly pieces of art, but always carefully handcrafted. We’re still learning and getting better at coding every day. You benefit from this because our code gets better all the time and we share what we learn on our blog.

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Our Featured Part

Kvitto

Our Featured App

SpeakerClock

The Latest From the Cocoanetics Blog

An Interpreter for Swift

Four Green Checkmarks: GitHub CI for macOS, iOS, Linux, and Windows

Introducing SwiftBash

Who is Cocoanetics?

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