Yes—Swift itself is free to use and open source. Its Apache 2.0-based license, with a Runtime Library Exception, permits developers to build and distribute binaries without an attribution requirement for embedded portions of Swift. Swift toolchains are available for macOS, Linux, and Windows. That does not mean every tool, device, Apple service, or app-distribution step is free.
What “free” means for Swift
Swift is an open-source programming language released under a license based on Apache License 2.0 with a Runtime Library Exception. Swift.org says the exception removes the attribution requirement when developers use Swift to build and distribute their own binaries. The license page specifically addresses compiled software containing portions of Swift; it should not be read as a blanket statement about third-party packages, Apple services, or every app-store obligation. See the Swift license terms.
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Swift was published as open source on December 3, 2015, alongside supporting libraries, a debugger, and a package manager. That date is historical context; current platform support is maintained separately.
Can you learn Swift without paying?
Yes. Swift.org provides installation instructions and getting-started material, and The Swift Programming Language is available as an online learning resource. Buying a book is optional.
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The official getting-started guide covers macOS, Linux, and Windows. After installing a toolchain, you can verify it in a terminal with swift --version. Swift Package Manager supports a command-line project workflow, though setup requirements vary by operating system.
Do you need a Mac?
No—not to learn Swift or to use a supported Swift toolchain. Swift.org lists development toolchains for macOS, Linux distributions, and Windows. Its live platform support table distinguishes development toolchains from deployment-only support and lists minimum supported operating-system versions. Those details change, so consult the current table when choosing a machine or deployment target.
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Windows setup has extra prerequisites. Swift.org’s manual guidance lists Visual Studio C++ build tools, a Windows SDK, Python, Git for Windows, and Developer Mode. Linux installation guidance presents Swiftly as an installer. Check the official getting-started and installation instructions for the requirements that apply to your system.
What if you want to build an iPhone or other Apple-platform app?
Apple-platform development is a separate workflow from simply installing the Swift language. Swift.org directs macOS developers targeting Apple platforms to Xcode, Apple’s environment for developing, testing, debugging, and distributing apps. App Store submissions must be built with the Swift version included in Xcode, according to the Swift.org macOS installer guidance.
A standalone Swift toolchain can be installed without Xcode, but Swift.org warns that Swift Package Manager functionality may be limited when Xcode is absent. Installing Swift alone therefore does not replace the Xcode workflow for submitting an app to Apple’s App Store.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Does free Swift mean iPhone app development and distribution are free?
No such conclusion follows from Swift’s open-source license. The license establishes terms for Swift project code; it does not establish current prices or conditions for Apple developer membership, App Store distribution, hardware, or other Apple services. Check Apple’s current terms for those items before budgeting or planning distribution.
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