REPL vs CodePad

REPL is a native code runner for Python and JavaScript — built for the AI era. When your favorite AI gives you code, where do you test it? REPL lets you paste code directly from AI conversations, run it instantly, and copy the results back. No laptop required. FEATURES - Native Python 3.11 — Real CPython running locally on your device, not a web interpreter - JavaScript Engine — Powered by iOS JavaScriptCore - Persistent State — Variables survive between runs, like a true REPL - Share Sheet — Send code from any app directly to REPL - History — Access your last 50 code runs - Smart Parsing — Automatically extracts code from markdown fences - Offline — Everything runs locally, no internet needed - Dark Mode — Easy on the eyes BUILT FOR AI WORKFLOWS Copy code from ChatGPT, Claude, Gemini, or any AI assistant. Paste into REPL. Tap Run. See results. Copy output back to your conversation. Iterate faster than ever. TECHNICAL DETAILS Python: Full CPython 3.11 interpreter embedded natively JavaScript: Apple's JavaScriptCore engine Storage: Code history saved locally Privacy: No data leaves your device

Write and run Python – right on your iPhone or iPad, with no ads and no subscriptions. CodePad is a full Python code editor and IDE built for iOS and iPadOS. It runs a real embedded Python interpreter directly on your device – no server or internet connection required. Your code executes locally, instantly, and works even offline. NO ADS. NO SUBSCRIPTIONS. • All features are available • No ads • No subscription required • No account required • Run Python locally and offline CODE WITH A REAL EDITOR • Full Python syntax highlighting • Line numbers, code folding, and current-line highlighting • Auto-indent and auto-close brackets • Line wrap and adjustable tab width • Find and replace across your file • Multiple editor themes and fonts with adjustable font size RUN PYTHON ON YOUR DEVICE • Execute Python scripts directly on your iPhone or iPad • No server round-trip – your code runs locally • Watch output appear in a dedicated console as your script runs • Send input to a running script interactively • Built-in timeout protection for runaway loops • Full Python tracebacks to help find and fix errors fast ORGANIZE YOUR WORK • Create and manage multiple projects, files, and folders • Import existing Python files or whole projects (.zip) • Export projects to share or back up • Deleted items move to Recently Deleted first NEVER LOSE YOUR PROGRESS • Automatic version history for every file • Compare earlier versions against your current code, line by line • Restore an older version in a single tap BUILT FOR iPHONE & iPAD • Dedicated Light and Dark editor themes • Keyboard accessory bar built specifically for writing code • Interview Mode for a clean, distraction-free workspace • Native experience on both iPhone and iPad Whether you're learning Python, prototyping an idea, preparing for an interview, or just need to run a quick script without opening a laptop, CodePad gives you a real Python environment anywhere. Write Python. Run it offline. Code anywhere. Python is a trademark of the Python Software Foundation. CodePad is not affiliated with or endorsed by the Python Software Foundation.