Opening soon · the first two islands are free
SwiftQuest is a course in Swift, the language behind Apple's apps, laid out as a journey across fifteen islands. Every quest has you write real Swift and run it on a real compiler, in your browser, with nothing to install.
Short explanations, then your hands on the code. Most quests take 30 to 50 minutes.
Each idea comes with a worked example you run and change, with a short checklist of things to try.
Encounters ask you to predict what code prints, write a program from a brief, or fix one that will not build.
Swift's own messages, explained in plain words, and replays that step through what your program actually did.
40 quests, 148 encounters and 57 worked examples, in the order that builds on itself. The last island hands you a brief and a test suite and leaves the design to you.
Island 1
Variables, types and functions. Enough Swift to use everything else: values, types, functions, and the single most useful habit in programming — reading what the compiler tells you.
Free
Island 2
Conditions, loops and optionals. Programs decide. This world is about making those decisions readable: conditions, optionals, pattern matching, and the difference between branching and leaving.
Free
Island 3
Arrays, sets and dictionaries. Four shapes for holding more than one thing, the operations that reshape them, and the judgement of which shape the problem actually has.
Pro
Island 4
Structs and value semantics. Most of the types you will write in Swift are structs, and the single most important thing about them is what happens when you assign one to something else.
Pro
Island 5
Enums and associated values. An enum is not a tidier way to write constants. It is a way to describe a situation so precisely that the impossible versions of it cannot be written down — and to make the compiler tell you every place that needs attention when the situation grows.
Pro
Island 6
Classes and inheritance. Types whose values are shared rather than copied: identity, inheritance, casting, and the judgement about which of your models genuinely need to be one thing that everybody sees.
Pro
Island 7
Protocols and generics. A protocol names what a type can do without saying what it is. That one move lets a battle engine work with combatants it has never heard of, and lets a downloader report finishing without knowing who is listening — which is all delegation ever was.
Pro
Island 8
Closures and callbacks. A closure is a function you can hand to something else — and, less obviously, everything it was still holding when you handed it over.
Pro
Island 9
Errors and Result. Things go wrong: files are missing, input is malformed, a payment is refused.
Pro
Island 10
ARC and reference cycles. Swift frees a class instance the moment nothing is holding it any more.
Pro
Island 11
Foundation, JSON and files. Everything so far you wrote yourself. Here the data arrives from somewhere else — a file, an export, another program — in a format nobody consulted you about.
Pro
Island 12
Regex and text matching. Log lines, chat commands, filenames. Text written for people to read, arriving in a program that has to understand it.
Pro
Island 13
Extensions, wrappers and macros. Everything here exists to remove repetition you would otherwise write by hand.
Pro
Island 14
Async, await and actors. Most of what a program does while it feels slow is wait. Swift's concurrency is built around that: a function can pause without blocking anything, work that does not depend on other work can overlap, and shared mutable state is protected by the compiler rather than by your memory.
Pro
Island 15
Build a complete Swift program. Every encounter so far told you which idea it was about. These do not.
ProWhen the compiler objects, you see exactly what it said, with a plain explanation added underneath, never instead.
Tap the white swift for the next hint, or open the worked solution. Asking for help never takes away anything you have earned.
31 skills, each shown three ways: you understand it, you can use it, and you can solve a new problem with it. My Swift Skills says which, and how.
The programs you write are saved to My Projects, where you can open them again and make another version.
The Practice Lab offers short practice on what you just learned, on a set-up you have not met before.
About 40 to 55 hours for a beginner, and 25 to 30 for someone who already programs. The two free islands take about three to four hours.
The first two islands are free. Pro opens the other thirteen, by the month or once for good, and your first payment can be refunded within 14 days, no questions asked.
The first two islands
€0
The whole course
€12a month
Renews monthly until you cancel.
Keep this course
€59one time
Later courses, if there are any, are sold separately.
Prices are in euros and include VAT where it applies. Before you pay, the checkout shows the final price, in your own currency where that is available.
Your first payment, monthly or one-time, can be refunded in full within 14 days, no questions asked. Monthly renewals are not refunded: cancel at any time and Pro stays until the end of the month you paid for. One refund per learner. Refunds and withdrawal has the whole policy.
You keep everything you have earned: completed quests, your skills, your programs, and your export. The free islands stay open. Opening new Pro quests and running their code waits until you renew.
Generous daily limits on running code keep the service fair for everyone, with far more room than a day of learning needs.
Our order process is conducted by our online reseller Paddle.com. Paddle.com is the Merchant of Record for all our orders: it handles billing, taxes, receipts and refunds, and your statement will show Paddle. Questions about a payment can go to Paddle at paddle.net, or to us at info@swiftquest.dev.
No. Your code runs on SwiftQuest's servers, so any modern browser will do. A computer with a keyboard is best; a phone works for reading, but typing code there is slow.
It teaches the Swift language itself: the foundation every Apple framework, SwiftUI included, is built on. It does not build iPhone screens.
Anyone 16 or older who wants to learn Swift, including people who have never programmed. If you already program, you will move faster.
Soon. Write to info@swiftquest.dev and you will hear the day it does.
SwiftQuest