UltraViewer for iPhone: the truth, and how to control a computer from an iPhone
There is no UltraViewer for iPhone, and the more important point: no software can remotely control an iPhone — that is an Apple restriction, not a shortcoming of any one vendor. The other direction works well though: using an iPhone to control a computer is entirely possible, straight from Safari.
Checked, not assumed
On 28 August 2026 the official download page at ultraviewer.net offered exactly one file: UltraViewer_setup_6.6.133_vi.exe, a Windows installer. There is no App Store app and no iOS build.
Two different questions, often conflated
| Question | Answer |
|---|---|
| Use an iPhone to control a computer? | Fully, and nothing to install |
| Control an iPhone from a computer? | No — no software can |
Why an iPhone cannot be controlled
iOS provides no API letting third-party apps simulate touch input, and does not allow capturing the whole screen while the app is in the background. This is a line Apple draws at the operating-system level, applying equally to TeamViewer, AnyDesk, UltraViewer and Chat Remote. No software gets past it, and anyone advertising that they can is either describing a different feature or lying.
And to be complete: an iPhone cannot share its own screen in Chat Remote either — iOS withholds that API from third-party apps too. If you need someone to see your iPhone screen, the practical routes are sending a screenshot, or starting a video call and pointing the camera at the device.
Using an iPhone to control a computer: three steps
- On the computer you want to reach (Windows or macOS): install the app and leave it running. It shows a machine code and a 6-digit password.
- On the iPhone: open the web app in Safari. No install, no account.
- Enter the code and password. The computer's screen appears on the iPhone.
The two do not need to share Wi-Fi, you do not forward router ports, and you never need an IP address.
Driving a desktop with your fingers
- Tap — left click at that point
- Press and hold about half a second — right click. The phone gives a short vibration to confirm
- One-finger drag — scroll the page on the other machine
- Pinch — zoom
- Two-finger drag — pan your own view. This sends nothing to the other machine
- Keyboard — bring up the iPhone keyboard and type straight into the computer
What works on a 6-inch screen
Honestly: opening a file to read, restarting a frozen program, copying files somewhere else, clicking one button to resume a job — all comfortable. Writing long documents, filling multi-field forms, browsing with many tabs — doable but tiring. Design work, video editing, precise drag and drop — wait until you are back at the machine.
More on this in controlling a computer from your phone.
If you are trying to support an iPhone user
A common case: your parents use an iPhone and you want to help remotely. Since the iPhone cannot be controlled, three practical routes:
- Have them send you a screenshot and guide them by voice — voice and video calls are built into the app.
- If the thing that needs fixing is on their computer rather than the iPhone, you can go straight into that computer.
- If they also use an Android device, that one can be controlled — it needs Accessibility permission.
And safety
- Nobody gets into your machine unless you approve it, or unless they have a password you set yourself.
- When you approve, you also choose how long: until you stop it (the default), 15 minutes, 1 hour, 2 hours, or all day.
- While a machine is being controlled it always shows a red bar that cannot be dismissed, with a stop button.
- Screen frames and every action travel directly between the two machines, end-to-end encrypted. The server cannot read the content.