Code Runner vs Edsger

Code Runner turns your phone into a real compiler and code editor. Write code, tap Run, and get real output in seconds — powered by a secure cloud sandbox, not a fake preview. Whether you're a CS student, learning to program, or a developer who wants to test an idea on the go, Code Runner lets you practice and run real code anywhere — no laptop required. RUN REAL CODE ANYWHERE Write and execute real programs in 8 languages: • Python 3 • JavaScript (Node) • C (GCC) • C++ (GCC) • Java • C# (Mono) • Go • Rust SEE OUTPUT INSTANTLY Your code runs in an isolated cloud sandbox and the real output comes back in seconds. Send input through stdin, catch errors, and see exactly what your program prints. A REAL CODE EDITOR A fast, modern editor designed for touch: • Syntax highlighting for every language • Smart autocomplete • Quick-keys bar for the symbols you actually use • Find & replace • One-tap code formatting • Adjustable font size, tab size, line numbers and themes SAVE & REUSE YOUR CODE Save your snippets and keep them ready to run anytime. Your code stays in sync so it's always with you. WORKS OFFLINE Write and edit code anytime — even with no connection. Run it when you're back online. FREE TO START Get 10 code runs every day for free. Upgrade to Pro for unlimited runs and to support ongoing development. Pro is available as a monthly or annual subscription. PERFECT FOR • CS students and self-taught learners • Practicing for interviews and exams • Testing snippets and algorithms on the go • Anyone who codes away from their desk Download Code Runner and carry a compiler in your pocket. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://looplab.app/apps/coderunner/terms-of-service Privacy Policy: https://looplab.app/apps/coderunner/privacy-policy

Edsger is a coding workspace for iPhone and iPad. Write C, Python, JavaScript or Lua, press Run, and your program runs right on your device. No account, no ads, and no network needed to write or run code. Ask Edsger, the built-in AI tutor, to explain code, fix an error or walk through a math or science problem. The free tutor and coding agent run entirely on your device, so your code and questions stay private. FOUR LANGUAGES, ON DEVICE • C with PicoC, a small interpreter • Python 3.14 with the standard library • JavaScript with JavaScriptCore • Lua 5.5 Each language has its own projects, syntax highlighting, console input and Stop. AI THAT HELPS YOU LEARN • Chat: ask questions, attach documents, and get step-by-step math • Agent IDE: describe a change and the agent reads, edits and runs files in your project, with restore points • On-device models are free and work offline EDSGER PRO (OPTIONAL SUBSCRIPTION) • Dijkstra Super Fast 1.0, a faster cloud model for Chat and the Agent IDE, with a monthly AI allowance • Photos in Chat with Dijkstra • Bring your own OpenAI or Claude API key • Push projects to your GitHub account • A custom Chat note and extra colors Pro Plus includes three times the Pro allowance. Cloud AI only runs after you allow sharing, and you can turn it off anytime. HONEST LIMITS C runs in PicoC, not GCC or Clang, so some standard library features are missing. Python, JavaScript and Lua run without package installs, network access or GUIs. AI can make mistakes; review its code and don't rely on it for medical, legal or financial advice. Subscriptions renew monthly unless canceled at least 24 hours before the period ends. Manage them in your Apple Account settings. Terms: https://garrettmichae1.github.io/lilc/terms.html Privacy: https://garrettmichae1.github.io/lilc/privacy.html