Mocha X11 lets you connect easily to X11 Window applications running on UNIX and Linux platforms.
The UNIX application run on the remote server, but the application output appears on the iPhone/iPad. Mocha X11 includes clients which can be configured to start the remote application.

Before being, please try our free lite version.

- Implementation of X11R7.7
- Includes a Telnet and a SSH client.
- Runs a local window manager on the iPhone/iPad.
- Support for Swiftpoint GT hardware mouse
- Support for Mouse Easy. Use an extra iPhone as a bluetooth trackpad.

What’s New

Version 1.3

- added support for a normal bluetooth mouse (left and right key only).

Ratings and Reviews

2.0 out of 5
2 Ratings

2 Ratings

Gelfin0 ,

Great initial effort, needs some work

It’s great that somebody has finally got a new X server working on iOS, but there are still some substantial shortcomings to be addressed before this is truly useful for productive work.

To be clear my main use case is running IntelliJ from a headless Linux server and doing real work remotely if I’ve only got my iPad, iPhone and a BT keyboard, which would mean not having to take a laptop with me on certain short trips, as well as enabling mobile work over LTE when not near Wi-Fi.

- The server sometimes becomes unresponsive for reasons unrelated to the client host or networking. Running on the same network via XQuartz is fully responsive. There have been tasks I had to complete on a laptop because they repeatedly froze the server. An example is signing into my account from JetBrains Toolbox, which launches Firefox. There was no way to complete that via the iPad. Firefox in general seems to cause responsiveness issues.
- As a nice-to-have, trying to select a good desktop resolution is a bit of an annoyance. It would be nice if the app were better at offering smart options based on device resolution.

- The integrated window manager exists, but is a bit too crude. Menus open with full borders and title bars. Modality is not correctly respected, so that dialogs can disappear behind their parents. The resize mechanism seems to only be available sometimes, and the close button frequently doesn’t do anything.
- I understand it’s a bit tricky in this environment, but locking a single app window to fill the entire device screen is super valuable on a tablet.

- I don’t know what limitations prevent the normal iOS keyboard support from translating into this app, but you have to turn on a setting in the app if you are using a BT keyboard. Modifier keys on the keyboard that work fine in other remote apps don’t work here. In fact, I couldn’t find a way to use an ALT modifier at all, either from the keyboard or the on-screen shortcut pad. It just didn’t work. Arrow keys on the keyboard also worked only sometimes.
- Likewise I am trying to use the “Easy Mouse” app instead of buying the single BT mouse listed as supported, and the tap gestures do not work as described in the mouse app. I am having to two-finger-tap to click, 2-tap+hold to right-click. Dragging is fiddly and awkward. I have yet to get scrolling to work at all.
- Perhaps most annoyingly, you cannot connect the mouse or keyboard after a session has started, and if you switch away to another app, the mouse and keyboard will no longer be available when you come back to X11. You’ve got to kill the session and restart to get them back.

I’m very glad somebody has taken this on, but a lot of the features here are still beta-quality, and have sufficient issues I can’t really use it beyond as a novelty at this point. I’ve been looking forward to a new X11 app for quite a while now, and hope to see these issues get resolved in the future.


Jan Frydendal
14.6 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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