Juanpe Catalán
Independent projects. Shared with everyone.
Building things I want to use.
Sharing what I learn.
I'm Juanpe, a Senior Software Engineer with 10+ years building software. My background is in iOS and Swift. These days, I'm also using AI to build useful products and tools.
Currently building AI-powered experiences at Goodnotes.
NATIVE N8N CLIENT
Native n8n client · macOS, iPadOS & iOS · SwiftUI
A native SwiftUI app to browse, edit and debug n8n workflows on your own server, or to sketch drafts locally on a real canvas. One shared codebase for Mac, iPad and iPhone. The Mac version is out now; iPhone and iPad are in App Review.
iPhone & iPadComing soon
AI FOR SHORTCUTS
AI workflows for Shortcuts · iOS, iPadOS & macOS · SwiftUI
Shortcuts moves things from app to app; Runline helps it understand them. Small workflows read a receipt, decide whether a message is urgent or summarize a page, then hand the result back to the shortcut. Each step picks its model: Apple's on-device model or an open MLX model by default, Claude, OpenAI or your own server when it pays off. Free, with an open beta on TestFlight for iPhone, iPad and Mac.
let workflow = Workflow(name: "Receipt to expense") {
Step.extract("expense",
instruction: "Extract the expense.",
model: .appleOnDevice) {
Field("merchant", .text)
Field("total", .number)
}
}
let report = try await WorkflowExecutor()
.run(workflow, input: .text(receipt))Swift package · iOS, macOS & visionOS · Open source
The engine behind Runline, as a Swift package. Build AI features from small, typed steps: a model for each one, tools and MCP servers, on-device and cloud models with a fallback, and control over what runs and what gets sent. Built on Hugging Face's AnyLanguageModel.
AI-powered daily digest · English & Spanish
I built this because I was tired of checking five different apps to catch up. An LLM pipeline curates and writes a daily digest of Apple, AI and tech news. Made for myself, shared in case it's useful to you too.
An automated publishing workflow, with a static website at the end.
An n8n workflow gathers the news, removes duplicate coverage and prepares the digest.
The pipeline produces English and Spanish text, updates the latest digest and saves a dated JSON archive.
The site reads those JSON files directly. No build step or server-side rendering. The n8n workflow runs separately and is not included in the public repository.
Even the waiting
can feel better.
view.showAnimatedGradientSkeleton()
A Swift library that makes loading states feel part of the app. What started as a small idea became a project used by thousands of developers, and a big part of my journey in the iOS community.
Explore on GitHubMore Swift components, tools and experiments along the way.
All my open sourceA few things I've written about building software.
From mobile apps to products with AI.
I like taking a problem from an initial idea to something people can use. Sometimes that's a Swift library for other developers. Sometimes it's a daily digest I wanted for myself.
iOS and Swift are my foundation. With AI, I'm exploring a wider set of tools and asking more product questions: what's worth building, what should be automated, and what is better kept simple?
I share the code, the experiments and what I learn along the way.
My experience on LinkedIn