Swift-only coding challenges
Master Swift.
LeetCode-style challenges built exclusively for Swift. Write, run, and submit Swift code right in your browser — no install needed.
20 test cases per problemInstant compiler feedbackError-by-error diagnosticsReal Swift 6.2 runtime
15+
Problems
3
Difficulties
6.2
Swift Version
20
Test Cases
Everything you need
A focused, distraction-free environment for Swift practice.
Instant Execution
Run your Swift code instantly via SwiftFiddle's cloud runner. No setup required.
Smart Completions
Get real-time code completions and hover hints powered by SourceKit-LSP.
Leaderboard
Compete with other Swift developers. Earn points for solving problems.
Swift Only
Purpose-built for Swift. Practice Apple's modern language the right way.