Writing and compiling TeX files on the go. No internet connection needed.

- Supports both plain TeX and LaTeX, output PDF;
- Supports XeLaTeX (online compiling, requires PRO subscription);
- Fast compiler optimized for iOS devices;
- On-demand package auto downloader, including big packages like beamer;
- Integrated BibTeX/MakeIndex;

- A text editor designed for LaTeX editing. With syntax highlighting, customizable assistant keyboard, powerful commands.
- Side by side PDF preview with auto reload after compilation.
- TeX-aware spell checking (cmd -> spell)
- Handy customizable assistant keyboard for inserting special characters.
- Open .tex file from other applications
- export & print pdf
- Customizable UI appearance (via twilit.l)

- Dropbox and OneDrive syncing, with file comparison and manual conflict resolution
- WebDAV
- PDF export/email

- Package download acceleration;
- Automatic eps-to-pdf conversion with online service;
- Payment will be charged to iTunes Account at confirmation of purchase
• Length of subscription is 1 year
- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- No cancellation of the current subscription is allowed during active subscription period
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication"
- Privacy and Term of Use:

- Visit for user guide, and templates for russian, chinese, japanese.
- Email to send bug report and feature requests.
- Or directly talk to @litchiedev on Twitter.

What's New

Version 5.0

Major redesign
- entire new text editor
- support split view: tex and pdf side by side
- better spell check with suggestions
- open multiple files at the same time
- copy file in file list
- fully customizable UI
- other bug fixes

Ratings and Reviews

4.3 out of 5

57 Ratings

57 Ratings

Version 4 really improves DropBox support


I use this app a lot to write notes and tutorials for my courses and it has been an invaluable tool for me. For anybody with memories of old implementations of LaTeX on Mac OS (for example OzTeX), the way this app. automatically fetches packages online when needed simply seems magical.
The one main weakness for me was the shaky DropBox support. Yes, it worked, but only as long as the DropBox folder was only used to push edits done on the iOS side. Any work done on the macOS side would invariably lead to conflicts that this App was doing a terrible job of solving (pretty much, the only solution was to flush the entire folder). Fortunately, v. 4 seems to have solved virtually all DropBox problems for me. It really works the way it should. Many thanks to the developer.
The only remaining minor irritants are that the editor is limited. Yes I know that I can modify the config file to change the presets, but it is somewhat cumbersome. I used to hate the copying mechanism that the developer seems to be very proud of... I just got used to it and it doesn't bother me as much as it used to.
Anyway, this is one of a handful of apps that are absolutely essential on my iPad and that I use every day. I Love it!

New Version is much better (Updated for Version 5)


[Written a few months before Version 5: Although some automatic sync isn’t great, it has much better version control. Incredibly stable and easy to use a wide-variety of packages (I was particularly impressed with how easy it was to make advanced geometric figures with tikz). Very happy I purchased it.]

I just recently updated to the Version 5. This was a massive improvement. The automatic sync is still wanting (as in, I need to hit “sync” whenever I think about it in order to sync my documents), but the editor is fantastic. Split view has made this a supremely useable and productive editor for myself. I still prefer TeXStudio on my computer, but on the go this is the best option.

Most stable Latex app at the moment


This app has allowed me to use my iPad as my primary work gadget. I like the stability of the app, and the fact that it even allows me to customize the editor to my needs.

The text selection method may take a little getting used to, and I sometimes have trouble selecting text properly using the Apple Pencil. Also, scrolling on the editor seems to be a little choppy. With the new iPad's Pro Motion technology, I hope the app releases an update to fix this.

Two improvements would be great:

1) The ability to see the pdf output side by side with the editor (another TeX app does this, but the other app has stability issues).

2) Being able to access any folder in my dropbox, and not just those in the TeX Writer folder. This makes it easier for me to switch between using my iPad when I am on the move, and my desktop when I am at home.

I think with these two updates Tex Writer will be very close to Tex experience on a laptop or a desktop. All in all I highly recommend giving this app a shot!


Chaoji Li
56 MB
Requires iOS 11.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPod touch.
Age Rating
Rated 4+
© (C) 2012-2018, Chaoji Li.
In-App Purchases
  1. Basic $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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