Swiftlet — Learn to Code

Swiftlet is an independent app and is not affiliated with or endorsed by Apple Inc.

Swiftlet turns your device into a place to actually learn to code — not just watch videos, but write real Swift and see it run instantly.

A real Swift engine runs right on your device, so every lesson is hands-on and works completely offline. Type code, run it, and watch what happens — no account, no setup, no Mac required.

LEARN
• Interactive lessons covering Swift from the ground up: variables, booleans, branching, loops, arrays, dictionaries, functions, closures, enums, structs, classes, protocols, generics, error handling, async/await, and more.
• Each lesson explains the idea, then asks you to write the code — and checks your work as you go.
• A clear learning path takes you from your first line of code to real language features, one concept at a time.

BUILD PROJECTS
• Guided projects let you assemble what you've learned into small, real apps.
• Follow step-by-step stages and finish with something that actually works.

PRACTICE
• Hands-on challenges reinforce each concept so it sticks.
• Try it, get feedback, and move on when you've got it.

TRACK YOUR PROGRESS
• Your progress is saved on device as you complete lessons, projects, and challenges.
• Pick up exactly where you left off.

WHY SWIFTLET
• 100% on-device: the code you write runs locally — private and fast.
• Fully offline: learn on the train, on a plane, anywhere.
• Mobile-first: designed for the phone in your pocket, not a shrunk-down desktop tool.
• No account, no tracking, no ads.

Whether you're writing your very first line of Swift or brushing up on closures and async/await, Swiftlet gives you a real coding environment that fits in your pocket.

Start coding today.