RegExp vs Edit Go

RegExp is a regular expression tester for developers, on Mac, iPhone and iPad. Write a pattern, paste your text, and see every match and capture group as you type, with the same engine your code uses. Six flavors, real engines: • Swift Regex • NSRegularExpression (Objective-C and Swift) • JavaScript (ECMAScript) • PCRE2, the engine of PHP • Go and Go (POSIX) Write and understand patterns: • Matches and capture groups highlighted in the test string, with their names • Errors marked right in the pattern, unbalanced brackets too • Substitution with each engine's replacement syntax, and a list mode that extracts one line per match • A quick reference of each flavor's syntax: select an item to insert it • Copy the pattern as ready-to-use Swift, Objective-C, JavaScript, Go or PHP code • Jump between matches; slow patterns time out instead of freezing the app Keep your patterns: • Sessions and folders, your own regex notebook, synced with iCloud across your devices • Search, duplicate, export and import sessions, or open one in its own window • Shortcuts actions, Spotlight search, and a Services menu item on the Mac for selected text Most of RegExp is free. RegExp Pro, a one-time purchase that works with Family Sharing, adds: • Explain: what every part of a pattern does, in plain language, and what the selected flavor doesn't support • Test cases: strings a pattern must or must not match, checked on every run • Apple Intelligence: write a pattern from a description, or get a summary of one (on supported devices) • The advanced options of every flavor RegExp speaks English, German, French, Spanish, Italian, Portuguese, Ukrainian, Russian, Japanese and Chinese. Made by an independent developer. Questions or ideas? Write to support@loshadki.app.

Edit Go opens the text and code files your computer writes - and saves them straight back where they came from. No subscription. No account. No ads. Every editing feature is free. EDIT THE FILE, NOT A COPY Open documents directly from Files, iCloud Drive, Dropbox, Google Drive or any other file provider. What you save goes back to the original - nothing is imported, nothing is duplicated. The file you edited on your Mac this morning is the same one you just changed on your phone. You can also open a whole folder and work through it without going back to Files each time. OPENS WHAT YOUR COMPUTER WRITES Automatic detection for UTF-8, UTF-16, GB18030, GBK, Shift_JIS, EUC-KR, ISO-8859-1 and Windows-1252 - so a config file from a Windows, Chinese, Japanese or Korean machine does not open as a screen of garbage. Switch line endings between LF (Unix), CRLF (Windows) and CR (classic Mac) whenever you need to. Encoding and line ending are remembered per file. MARKDOWN THAT READS LIKE MARKDOWN Headings, bold, italic, links, quotes and fenced code blocks are highlighted as you write, and code inside a fenced block is highlighted in its own language. Press return in a list and the next bullet is there waiting - numbered lists count up, task lists stay unchecked, and an empty item ends the list. A rendered preview is one tap away. HTML files preview too. BUILT FOR BIG SCREENS On iPad and on an unfolded iPhone Duo, your files sit in a sidebar next to the document you are editing. Open the preview and the sidebar steps aside, so the editor and the rendered page share the screen - side by side when it is wide, one above the other when it is tall. Fold iPhone Duo partway and the editor and preview move to either side of the fold. On iPad you can also open several windows at once. AN AI THAT NEVER SEES YOUR FILES Explain a block of config you didn't write. Summarize a log. Describe a pattern in plain words and get a regular expression you can run in Find. Translate a comment. Fix the syntax of a broken JSON or YAML file - you review every change before it is applied. All of it runs on the device itself - nothing is uploaded, nothing needs an account, and it works in airplane mode. It is also free. Requires iOS 26 or later on a device that supports Apple Intelligence. If yours doesn't, or Apple Intelligence isn't offered where you are, everything else in Edit Go works exactly the same. BUILT FOR QUICK, PRECISE EDITS - Syntax highlighting for 25 languages: Swift, JavaScript, TypeScript, Python, Java, C, C++, C#, Go, Rust, Ruby, PHP, Perl, Lua, Haskell, Elixir, shell, HTML, CSS, Markdown, JSON, JSON5, YAML, TOML and SQL - Dedicated highlighting for .ini, .cfg, .conf and .properties config files - Find and replace - match case, whole word, regular expressions and replace all - Go to line, line numbers, current-line highlighting - Show invisible characters, page guide, line height, soft tabs and indent width - A keyboard bar you can fill with the characters you actually type - Undo and redo, adjustable font family and size - Shortcuts support: append a line to a file, create a file, read one, or open one - without launching the app - Print, share, duplicate and rename YOUR WORK IS NOT LOST Unsaved changes are written to a recovery draft as you type. If iOS reclaims the app while it is in the background, Edit Go offers to restore them the next time you open that file - and tells you when the file was changed somewhere else in the meantime. Deleting a file gives you a few seconds to undo. MAKE IT YOURS A free glass theme, plus optional Windows 95 and E-Ink themes if you would rather your editor did not look like everything else. PRIVACY Edit Go makes no network requests of its own. There is no account, no analytics and no server - your files stay on your device or in the cloud service you chose. Available in English, Simplified Chinese, Traditional Chinese, Japanese and Korean.