Runestone Text Editor vs UI Catalog for SwiftUI

A plain text editor with syntax highlighting, line numbers, search and replace, page guide, and much more. It's like TextEdit but more powerful and optimised for iPhone and iPad. Runestone is made by a single person with a love for text editors and a vision of building the most lightweight text editor for iPhone and iPad that still has the core features for editing code. Features: - Syntax highlighting of many languages including HTML, JavaScript, JSON, Markdown, Swift, Python, PHP, YAML, and many more. - Select one of the twelve standard themes including popular themes like Tomorrow, Dracula, Solarized, and One Dark Pro. - Innovative find and replace for searching and modifying text while still viewing your file. - Choose font and font size, including support for custom fonts imported using another third-party app. - Show the line and column the cursor is located on. - Uses the standard document browser for an experience similar to the Files app. - Quickly navigate to a specific line. - Automatically close opening brackets and quotes. - Multiple windows on the iPad. - Format code using Prettier.js. Supported languages include CSS,HTML, JavaScript, JSON, PHP and more. - Choose text encoding between popular encodings like UTF-8, UTF-16, ISO Latin 1, and many more. - Enable or disable autocorrection, autocapitalization, and smart punctuation. - Set default file extension of new files. - Open files in Runestone from the Share Sheet. - Print documents. Premium features: - Choose between eight app icons. - Show line numbers. - Highlight the selected line. - Increase line height and letter spacing. - Disable line wrapping to allow horizontal scrolling. - Show tabs, spaces, and line breaks using a selected symbol. - Enable page guide at a specific column to easily tell when lines are getting too long. - Add vertical and horizontal overscroll. - Remember the selected language per file. - Save file extensions and filenames that should always be treated as plain text files. - Enable soft tabs and choose the width of the tab character. - Specify whether pressing the tab key should insert a tab or indent the line. - Adjust the scaling of Markdown headings and disable highlighting of code blocks in Markdown. Runestone was built on the open-source framework with the same name. Find more information on the Runestone framework at github.com/simonbs/runestone

See SwiftUI components live. Copy the code. Ship faster. Now covering Map (MapKit) and Charts (Swift Charts), with interactive previews and real code for both. UI Catalog is the SwiftUI reference you'll open every day — browse or search, play with live previews, copy real code, and jump to Apple's official docs in one tap. Browse by category. Search as you type. A wide range of SwiftUI components on one scrollable screen, grouped by category — Controls, Layout, Navigation, Shapes, and more. A thumb-friendly search bar on the bottom filters instantly as you type. Now with Map and Charts v1.2 adds two of the most-requested frameworks. Explore MapKit's Map — annotations, markers, map styles, and camera position — and build Swift Charts with bar, line, area, and point marks, all from the same parameter playground, with copy-paste code for every configuration. See it live, not just described Open any component to an interactive Preview — the real SwiftUI view, running. Flip between light and dark, and tweak it from a parameter playground: toggle states, change colors, adjust values, and watch it update in real time. Copy code that matches what you see The Code tab generates a clean, syntax-highlighted SwiftUI snippet from your current playground settings — change a parameter and the code changes with it. One tap copies it, ready to paste into Xcode. One tap to the official docs Each component includes a direct link to Apple's official developer documentation, so deeper reading is never more than a tap away. Buy once. Use forever. Every competing catalog has a paywall, a subscription, or ads. This one has none of them — and it never touches your data. One-time purchase — no subscription, ever No advertisements anywhere in the app No account or login — open it and it just works No analytics, no tracking — everything stays on your device Who it's for Built for developers and designers who work with SwiftUI daily, and for product owners who want to see what's natively possible before writing a spec. This app is an independent reference tool and is not affiliated with, endorsed by, or sponsored by Apple Inc. SwiftUI is a trademark of Apple Inc.