Cathode is an advanced terminal app with visuals inspired by classic computers.
Use it to wirelessly connect to any machine that offers secure shell access.


- Fast and accurate emulation
- Live text resizing and reflowing
- 256 Colors
- Unicode (single width glyphs)
- Perfect score on test suites

- Large collection of retro bitmap fonts
- Zoom text from small/crisp to large/blocky.
- More than a dozen sliders for customizing shape, colour, lighting, and distress.
- Takes full advantage of retina displays
- Fluid animations respond to your gestures and movements
- Low power modes for using less CPU and battery

- Support for bluetooth keyboards, including special keys
- On-screen keyboard can be customized with favorite characters
- Keyboard can be hidden for a fullscreen experience
- Works comfortably in both portrait and landscape modes

- Connects over cellular or Wifi
- Handles multiple concurrent sessions
- Preserves connections and reconnects when needed
- Automatically detects nearby computers using Bonjour
- Save bookmarks for frequently used servers.
- SSH key management.

What’s New

Version 3.4.0

- Fully 64-bit
- Multitasking support
- iPad Pro support

Ratings and Reviews

3.2 out of 5
15 Ratings

15 Ratings

Frank Jonen ,

Drops connections too quicky

The best looking client but the most finicky one. One moment you’re editing away in nano and out of the blue Cathode cuts the connection. Other clients I tested didn’t have that issue.

Zerohana ,

Best pocket SSH client I’ve ever used.

I was a little worried when I saw the low reviews on the App Store page, but also considered that it had a small pool to draw from. That probably skewed the results, so I decided to give it a try. I haven’t experienced the grievances of dropped connection mentioned by other reviewers, and it works on cellular connection for me (using a iPhone 7 A1660 —>Qualcomm modem, in case that factors in—I know there are different models of the iPhone 7 with different radio chips).

Anyway, aside from the technology working without issue for me, this app is easily the best looking out there, and doesn’t spy—*cough*—collect user data behind your back (Prompt 2, get your act together. An ssh client should not send any unsolicited traffic over the network. You lose all trust the moment you do that—especially for a premium $15 app like yours. Disappointing).

I’m so glad I came across this app for testing my remote server, it speaks to my inner geek and actually made some of my work fun. If you need a pocket SSH client, this is the one.

bcarpe211 ,

Best SSH Console

Putting the awesome graphics aside, this app does a great job at doing what it was made to do: SSH. I got it because there was bluetooth keyboard support (which worked great with my Logitech M1 keyboard) and because of the graphics. I read some reviews that complained about the graphics making the text hard to read. I didn't have that issue, but that was mostly because I was able to change the effects. You can basically turn off any feature that you don't want, but then that makes it boring, and you'd be better off buying a different app. This one was worth getting though. I loved playing with the features and making my SSH session a lot more fun. PROTIP: It wasn't apparent to me at first since there wasn't any instructions on this, but apparently the text size can be adjusted by pinching the screen. I had a couple applications that required there to be at least 80 columns and the default text was so large that I only had about 70. I emailed the support team and they replied within 5 minutes and told me about the pinch to zoom feature. I would totally buy another application from these guys.


Secret Geometry, Inc.
7 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2015, Secret Geometry, Inc.


  • Family Sharing

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

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