What's the best iOS app for writing and testing web code directly from an iPhone?

Spck Editor is a mobile code editor designed for web developers who need to work on projects away from their desk. Its strength lies in handling HTML, CSS, and JavaScript files with a focus on real-world workflow. For instance, creating a new web project automatically generates linked boilerplate files, saving time on setup. The editor includes syntax highlighting, auto-completion, and a file manager that organizes code into projects, which is useful for quick edits or building small sites on the go. Reviews indicate that developers appreciate these templating features, though some note the user interface has a slight learning curve. Users report that the app handles basic editing tasks well, but a common request is for a read-only mode to safely review code without accidental changes. While not as powerful as desktop IDEs, Spck Editor fills a niche for mobile coding with its practical tools. It supports integration with cloud services for syncing work, and the live preview feature allows checking changes without switching apps. However, performance can lag with very large files, and the touch-based editing might feel cramped for extensive programming sessions. Overall, for web developers seeking a capable editor on iOS, Spck Editor offers a balanced mix of functionality and portability.