Now on the App Store
Code, config and CSV files, edited where they live
A code and text editor for iPhone and iPad. Open a file from Files, iCloud Drive or any other provider, edit it with syntax highlighting and a keyboard row made for code, and it is saved back to the same place.
iPhone and iPad · iOS 17 or later · Free · No account
Version 1.0 · Out now
42 Editor works on your files in place, so there is nothing to import or export. Pick a file or a whole folder in the system picker, make your changes, and autosave writes them back to the original. If another app changed the file in the meantime, 42 Editor stops and asks which version to keep.
Free · iPhone & iPad · iOS 17.0 or later
View on the App Store (opens in a new tab)What is 42 Editor?
42 Editor is a code and text editor for iPhone and iPad. It opens the files you already have, in the Files app, iCloud Drive, Working Copy, Dropbox or any other file provider, and saves your changes back to the same file. There is nothing to sign in to and nothing is uploaded.
Sometimes the file that needs fixing is a config file, a script or a spreadsheet export, and the only device to hand is a phone. 42 Editor is made for those moments. Open a single file, or open a whole folder and move around it, and the editor keeps the things that matter to the file the way they were: its text encoding, its line endings and whether it ends with a newline.
The keyboard gets a row of its own above it, with Tab and outdent, a comment toggle, cursor keys, undo and redo, and the brackets and symbols that are buried on the iOS keyboard. CSV and TSV files open as a table you can sort, filter and edit cell by cell, and Markdown and HTML files have a preview a tap away.
42 Editor is an editor, not a place to run code. It does not compile or run anything, so your files stay exactly as you typed them.
The App Store set is one continuous picture, so keep swiping.
Swipe or scroll sideways: each panel picks up where the last one ends.
Open File or Open Folder from any provider in the Files app. Changes go back to the original, and recent files reopen with one tap.
29 languages, from Python, Swift and JavaScript to SQL, YAML and Dockerfile, with light and dark palettes.
Tab and outdent, comment toggle, cursor keys, undo, redo, and the symbols the iOS keyboard hides.
The system find panel, Go to Line, toggle comment, and indent or outdent a whole selection.
A grid with a pinned header row. Edit cells, add, duplicate or delete rows and columns, sort, filter, and undo.
Switch between Edit and Preview. Headings, lists, tables, code blocks and task lists in Markdown; HTML as a page.
Keeps each file's encoding, line endings and final newline. Autosaves two seconds after you stop typing, and asks first if another app changed the file.
No account, no analytics and no ads. Your files stay on your device and in the providers you choose.
The language is picked from the file name, and you can change it from the editor's menu.
Any other text file opens as plain text. CSV and TSV files open as a table, with the raw text one tap away.
Quick facts about 42 Editor for iOS
Effective date: October 8, 2026Last updated: October 8, 2026
Your files stay where you keep them. 42 Editor has no accounts, no servers and no analytics. It opens files on your device and in the file providers you choose, and saves them back there. We collect nothing, so there is nothing to sell, share or delete.
CS42.org ("we", "us", "our") built 42 Editor as a free code and text editor. This policy explains what the app handles and where it goes. The short version: your files stay on your device and in the storage providers you choose. 42 Editor has no accounts, no servers of its own and no analytics, and it contains no code that sends your files or data to us or to anyone else.
Nothing. We operate no servers for the app and receive no data from it. We cannot see your files, their names or contents, or how you use the app.
The app reads and writes only the files and folders you open with it: through the system file picker (Open File or Open Folder), from the Files app or the share sheet (Open in 42 Editor), or in its own folder, On My iPhone › 42 Editor. Your changes are saved back to the same file, on your device or in the provider that holds it. Files in iCloud Drive, Dropbox, Working Copy or any other provider are stored and synced by that provider under its own terms; 42 Editor only works with the copy iOS gives it.
None of it is transmitted. It is not part of any account, because there is no account.
42 Editor does not ask for access to your camera, microphone, photos, contacts or location, and it does not send notifications. It can reach a file or folder only after you pick it, and you can take that access back in the app at any time (see section 9).
The preview shows an HTML or Markdown file as a web page, inside the app. If the file refers to images, stylesheets or scripts at web addresses, the preview loads them from those addresses, the way a browser would, so the sites that host them receive an ordinary web request from your device, including your IP address. Scripts in an HTML file run in the preview as they would in a browser. Nothing from your file is ever sent to us. A link you tap in the preview opens in Safari or your mail app. A file that refers to nothing on the web is previewed without any network connection.
Nothing is shared automatically. When you tap Share, iOS hands the file to whichever app you pick, and from that point that app's privacy policy applies.
The app contains no advertising, no analytics, no crash-reporting services and no tracking identifiers. It does not use the Advertising Identifier and does not "track" you as defined by Apple's App Tracking Transparency framework.
42 Editor is a general-purpose editor and is not directed at children. Because we collect no data at all, we hold no personal information about anyone, including children.
There is no request to make of us under GDPR, CCPA or similar laws, because we hold nothing to disclose, correct or erase.
We retain nothing, for any period. The app keeps the items above on your device until you remove them or delete the app.
Your files are protected by your device's own security: your passcode, Face ID or Touch ID, and iOS app sandboxing, which lets the app reach only its own folder and the files and folders you pick. Files in a cloud provider are also protected by that provider's security. Keep your device updated and locked.
We receive no data, so no data is transferred to us from any country.
If this policy changes, the dates at the top change with it, and material changes will be described in the app's release notes.
If you have any questions about this Privacy Policy, contact us at hello@cs42.org.
Effective date: October 8, 2026Last updated: October 8, 2026
42 Editor saves your changes to the original file, so keep backups of files that matter and check your edits before you rely on them. The app is free and provided as is.
By downloading, installing or using the 42 Editor application ("the App"), published by CS42.org ("we", "us", "our"), you agree to these Terms and Conditions. If you do not agree, please do not use the App.
42 Editor is a free code and text editor for iPhone and iPad. It opens text files from your device and from the file providers available in the Files app, edits them in place with syntax highlighting, shows CSV and TSV files as an editable table, previews Markdown and HTML files, and saves your changes back to the original file. It does not run or compile code.
We grant you a personal, non-exclusive, non-transferable, revocable licence to use the App on Apple devices you own or control, in line with the Apple Media Services Terms and Conditions. We retain all rights not expressly granted.
The files you open, create and edit with the App are yours. We claim no ownership of them and, because they are never sent to us, we have no access to them. You are responsible for the content of your files, for having the right to change them, and for anything you choose to share.
The App saves your changes to the original file: when you tap Save, and, with Autosave on (the default), two seconds after you stop typing and whenever you leave the file or the App. Deleting a file or folder in the App's folder view removes it from where it is stored, and the App cannot undo that. Choosing Open as Text Anyway for a file that is not text, and then saving it, can damage it. Keep backups of files that matter.
Syntax highlighting, JSON formatting, CSV and TSV parsing and the encoding and line-ending detection are aids. They can misread unusual files, so check the result before you rely on it, especially before saving a file that other software depends on.
The preview shows an HTML or Markdown file as a web page. Like a browser, it loads any images, stylesheets or scripts the file refers to at web addresses, and it runs the scripts in an HTML file. Preview only files you trust. Links you tap in the preview open in Safari or your mail app.
iCloud Drive, Dropbox, Working Copy and other file providers are run by their own companies under their own terms. Their syncing, availability and handling of conflicting versions are outside our control.
We may add, change or remove features at any time, and we may stop supporting the App.
The App is provided "as is", without warranties of any kind, express or implied, including fitness for a particular purpose and uninterrupted or error-free operation. We do not warrant that the App will open, display or save every file correctly.
To the fullest extent permitted by law, CS42.org is not liable for indirect or consequential loss, including the loss or corruption of files or data, arising from your use of the App. Nothing here limits liability that cannot lawfully be limited.
You may stop using the App at any time by deleting it. This licence ends automatically if you breach these terms.
These terms are governed by the laws applicable at the developer's place of establishment, without regard to conflict-of-law principles.
We may update these terms. The dates at the top change when we do, and continued use after an update means you accept the revised terms.
If you have any questions about these terms, contact us at hello@cs42.org.
Questions about 42 Editor?
42 Editor is free on the App Store. For anything at all, including a file the editor doesn't handle well or a language you'd like highlighted, write to us:
On the App Store, free for iPhone and iPad with iOS 17 or later, with nothing to buy inside the app.
Any text file up to 20 MB: source code, scripts, config files, logs, Markdown, HTML, CSV and TSV. Twenty-nine languages are highlighted, and anything else opens as plain text. If a file looks like binary data, the editor says so before you open it as text.
Yes, with any provider that appears in the Files app. Open a file or a whole folder, and your changes are saved back to the same place.
42 Editor notices before it saves. Autosave pauses and it asks whether to keep your version or reload the file from disk.
No. It keeps the encoding (UTF-8 with or without BOM, UTF-16 or Windows-1252), the line endings (LF, CRLF or CR) and whether the file ends with a newline.
No. 42 Editor edits and previews files. It doesn't compile or run code.
No. There is no account and no server. Files stay on your device and in the providers you choose. The only time the app reaches the web is when an HTML or Markdown file you preview refers to images or scripts online, and those requests go to the sites in the file, never to us.
We typically respond within 48 hours.
