Runestone Text Editor vs DevToolkit Mobile

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

Dev Toolkit packs the everyday developer utilities you reach for dozens of times a week into one fast, native iOS app — no browser tabs, no terminal, no Wi-Fi required. Whether you're debugging an API token, checking a cron schedule, or converting timestamps on the go, Dev Toolkit gives you instant answers with copyable output you can paste anywhere. FREE TOOLS • Cron Parser — Paste any cron expression and see the next 5 scheduled runs in plain English. Supports standard 5-field and extended @yearly/@monthly shortcuts. • JWT Decoder — Drop in a JSON Web Token and instantly inspect the header, payload, and signature. Expired tokens are flagged automatically. • Encoder / Decoder — Base64, URL-encode, and HTML-encode or decode any string in one tap. • Hash Calculator — Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any input. Great for checksums and quick verification. • Timestamp Converter — Convert Unix epochs to human-readable dates and back. Handles seconds and milliseconds, with live "ago" formatting. PRO TOOLS Unlock all five Pro tools with a one-time purchase — no subscriptions, no recurring charges. • UUID Generator — Generate RFC 4122 v4 UUIDs in bulk. Copy one or copy all at once. • JSON Formatter — Pretty-print, minify, and validate JSON. Highlights syntax errors with line numbers. • Chmod Calculator — Translate between octal (755) and symbolic (rwxr-xr-x) Unix file permissions interactively. • SQL Formatter — Clean up messy SQL queries with proper indentation and keyword capitalization. • Diff Checker — Compare two blocks of text side-by-side or as a unified diff. Spot changes instantly. WHY DEV TOOLKIT • Native iOS 17+ — Built entirely in SwiftUI. No wrappers, no web views. Feels right at home on iPhone and iPad. • Adaptive layout — NavigationStack on iPhone, NavigationSplitView on iPad for a true split-pane experience. • Offline-first — Every tool works without an internet connection. Your data never leaves your device. • Dark mode — Full dark and light appearance support. • One-tap copy — Every output view has a copy button. Generate, copy, paste. Done. • No accounts — No sign-up, no cloud sync, no tracking. Open the app and get to work. • Private — Zero analytics beyond what Apple provides. No data collection. BUILT FOR DEVELOPERS, BY A DEVELOPER Dev Toolkit Mobile focuses on the utilities that are annoying to do in a browser and overkill to open a terminal for. It's the app you keep in your dock for the quick stuff. Free forever: Cron Parser, JWT Decoder, Encoder/Decoder, Hash Calculator, Timestamp Converter. Pro (one-time): UUID Generator, JSON Formatter, Chmod Calculator, SQL Formatter, Diff Checker.