Swifty Compiler vs JavaScript Challenge

Write and run Swift code effortlessly, anywhere and anytime. Swifty Compiler is the perfect tool to test algorithms, prototype ideas, or experiment with Swift code on the go. Use it as your personal playground to explore concepts and improve your coding skills. Free Features: • Daily credits⁽¹⁾: 10 credits per day • Import Swift files • Open Playground files and import their Swift files • Share Swift files, Playground files, or text directly to the app • Code Snapshot (PNG, JPEG, HEIC, or PDF) • Adjustable font size and line spacing • Auto-indentation • Code completion suggestions • Auto-closing brackets and quotes • Error highlighting • Bracket and line highlighting • Code block selection • Cursor position indicator • Code snippets • Extra keyboard buttons • Comment/uncomment selection • Markdown comments • Duplicate code • Move line up/down • Indent/Outdent (Shift right/left) • Jump to line or selection • Keyboard shortcuts • Multitasking support on iPad • Dark and light mode support • Share extension support • No ads Premium Features: • Unlimited credits⁽¹⁾ • Share as Swift file • Save Swift files to the Files app (iCloud or local storage) • Auto-save last input • Unlimited Undo/Redo • Code formatting • Add documentation • Syntax correction • Optical Character Recognition (OCR) • Abstract Syntax Tree (AST) • Multiple Swift versions • Font pack • Show invisible characters • Create/Edit custom snippets • Create/Edit custom keyboard buttons • No watermark on code snapshots 1. 1 Credit = 1 Code Execution Feel free to reach us out if have any suggestions or ideas. - Email: taleb.apps@gmail.com - X: @hassantaleb90 - Telegram: @hassantaleb If you enjoy Swifty Compiler, please leave a review to support us!

Feed your brain. Level up. Learn to write real JavaScript by solving one puzzle at a time, right on your phone. JavaScript Challenge is a single path of original coding problems, from your first function to graphs, dynamic programming and beyond. Every solution runs on-device in real JavaScript and is checked against hidden tests, so passing means it actually works. Free to start: the opening levels are free, then unlock the full path with a single one-time purchase. No subscription, no ads, no account. WRITE REAL CODE • A coder keyboard built for JavaScript: tab, brackets, quotes, snippets, undo • Instant feedback with named tests, expected vs actual output • Some levels enforce rules (no built-in array helpers, recursion required) so you learn the technique, not the shortcut LEARN THE RIGHT WAY • Three-tier hints from Rhino, your smug but surprisingly helpful mentor • Curated solutions after you solve: naive vs optimal, time and space complexity • Topics: strings, arrays, objects, closures, recursion, dynamic programming, sorting, searching, graphs, trees, hashing, bit tricks, grids, greedy strategies, intervals STAY MOTIVATED • One path, no shortcuts: easy → medium → hard, with performance tests on the hardest levels • XP, player levels, daily streaks and badges • Six themes, dark and light PRIVATE BY DESIGN • Works fully offline, no account, no tracking — your progress stays on your device • No ads, ever