Python Code Cards vs Read Markdown

Try the Python code you just found, right on your iPhone or iPad. See why it works by stepping through it. Python Code Cards combines an offline Python 3.14 runtime, an editor, and a step debugger with a notebook for your small code experiments. MADE FOR SMALL EXPERIMENTS • Check a snippet while reading a tutorial • Follow a loop or branch and inspect changing values • Keep useful code with your own notes START WITH CODE THAT ALREADY RUNS Five editable samples include FizzBuzz, Fibonacci, Binary Search, Bubble Sort, and Recursive Factorial. Change a number or condition and compare the results. This is a place to run and explore code, rather than a course or quiz app. PAUSE A LINE. SEE THE VALUES. Set breakpoints from line numbers. Continue, pause, step over, step into, and step out. Inspect variables, watch expressions, the call stack, and output as you debug. KEEP EACH EXPERIMENT AS A CARD Add code cards and notes. Edit, duplicate, collapse, and reorder them. Source, breakpoints, watches, and recent results stay together on your device. WRITE AND CHECK WITH LESS FRICTION Python syntax highlighting and local completion for keywords, built-ins, and symbols in your code. See standard output, exception lines, execution time, and resulting variables. Choose System, Light, or Dark appearance and switch the interface among 10 languages. NO ACCOUNT. NO ADS. NO TRACKING. The core app works without an internet connection. No analytics, tracking, or cloud sync. Cards and settings remain in local app storage and are not automatically sent to the developer. WHAT IS INCLUDED The bundled Python standard library is supported. Installing third-party packages with pip, AI completion, and cloud execution are not supported. Normal execution has a time limit.

Read Markdown (R.md) is the fast, lightweight way to read and edit Markdown on iPhone and iPad. Open a .md file and it appears instantly, rendered exactly like GitHub, in a clean, distraction free layout. Need to change something? Tap the pencil and edit, with a formatting bar right above the keyboard. Truly native, no accounts, no setup, no internet. WHY READ MARKDOWN • Fast: opens in a blink and scrolls smoothly, even for big documents. • Lightweight: a tiny native app that is easy on memory and battery. • Dead simple: just open a file and read. Nothing to configure. READING • Renders like GitHub, including tables, task lists and blockquotes. • Syntax highlighting for code blocks, with a copy button on each one. • Live Mermaid diagrams: flowcharts and sequence diagrams render in the page. • Dark mode that follows your system appearance. • Live outline: tap a heading to jump, or filter to find one. On iPad it stays open in a sidebar. • Images next to your document and links to other .md files just work. • Find in page, adjustable text size, and a list of recent files. • Export a clean, paginated A4 PDF and share it anywhere. EDITING • Reading stays reading: the app only switches to editing when you tap the pencil. • On iPad, edit side by side with a live preview that updates as you type. • Formatting bar for headings, bold, italic, code, links, lists, checklists and tables, plus undo and redo. • Smart typing: Return continues lists, code fences close themselves, and pasting a URL over selected text makes a link. • Tick a checkbox right in the rendered page and the change is saved to your file. • Light syntax colors in the editor, a clear unsaved indicator, and a prompt before you close. • Plays well with other apps: changes made elsewhere are detected, and you choose to reload or keep yours. • Hardware keyboard shortcuts on iPad: Cmd+B, Cmd+I, Cmd+K and Cmd+S. WORKS WITH YOUR FILES Open documents from the Files app, iCloud Drive or any other app with Open In. Files are edited in place, so nothing is copied or uploaded. Works fully offline. No account, no tracking, and your files never leave your device. Perfect for developers, writers and anyone who reads README files, design docs and notes. Download Read Markdown and open your first .md file in seconds.