REPL vs Markdown Mermaid

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

Simple, lightweight and easy to use markdown and mermaid viewer. Use this for reading through documents you download or use a url.