JSON Tools vs Python Challenge

A fast, private JSON editor and viewer for iPhone and iPad. Paste an API response, open a file or load a URL, then format, validate, explore and convert it without leaving your device. EDIT LIKE ON YOUR DESKTOP • Syntax highlighting, line numbers and code folding • Smart editing: brackets and quotes close themselves, closers line up, Backspace steps back a whole indent level • Keyboard toolbar with JSON keys, indent and outdent • Tabs, find and replace, undo and redo, and full iPad keyboard shortcuts EXPLORE YOUR DATA • Interactive tree view with search, JSONPath filters and Copy JSONPath • Table view shows arrays of objects as a spreadsheet-style grid • Side-by-side diff against another file, pasted text, an open tab or a URL VALIDATE WITH JSON SCHEMA • Built-in SchemaStore catalog covering hundreds of popular config files • Use the $schema your file declares, add one from a file or URL, or generate one from your JSON • Errors point to the exact line CONVERT AND EXPORT • Pretty-print or minify with your preferred indentation • Convert JSON to YAML, XML, CSV, TSV, TOML, TOON, HTML, Markdown and Base64 • Generate model classes for Swift, Kotlin, Dart, TypeScript, Python, Java, C# and Go PRIVATE BY DESIGN Your documents are processed on your device and never uploaded. No account, no ads, no tracking. Open files from the Files app, iCloud Drive or a URL, and share results anywhere.

Feed your brain. Grow the snake. Learn algorithms by writing real Python — on your phone. Python Challenge is a single path of original coding challenges, from your first `return a + b` to N-Queens, edit distance and Dijkstra. Every solution runs on-device in real Python and is checked against hidden tests, so passing means it actually works. WRITE REAL CODE • A coder keyboard built for Python: tab, snippets, brackets, quotes, undo • Instant feedback with named tests, expected vs actual output • Some levels enforce rules (no sorted(), recursion required) so you learn the technique, not the shortcut LEARN THE RIGHT WAY • Three-tier hints from PySnake, your slightly sardonic mentor • Curated solutions after you solve: naive vs optimal, time and space complexity • Topics: strings, lists, sorting, searching, recursion, dynamic programming, data structures, graphs, heaps, bit tricks, grids, greedy, intervals, math STAY MOTIVATED • One path, no shortcuts: easy → medium → hard, with performance tests on the hard ones • XP, levels, daily streaks and ten badges • Six themes, dark and light PRIVATE BY DESIGN • Works fully offline, no account, no ads, no tracking — your code and progress stay on your device. Only anonymous usage statistics are sent.