Desktop app: install and connect
The desktop app is a small window that sits on top of everything else on your screen. Type a note, drop a file, take a screenshot or record audio without switching to your browser. It also shows reminders for tasks that are due. This page covers installing it, connecting it to your account and finding your way around its window and tray menu.
For what you can capture with it, see Capturing with the desktop app.
What you need
- An Ultrathink account with a verified email address.
- Windows 10 or later, or a Mac with Apple silicon or an Intel processor.
- A device key for this computer. See Connect an app with a device key.
Download it
In the web app, go to Settings > Downloads. The desktop app is in the Desktop widget group, with one row for each computer:
| Row | File | For |
|---|---|---|
| Windows | ultrathink-setup.exe | Windows 10 or later |
| Mac (Apple Silicon) | ultrathink-arm64.dmg | Macs with an M-series chip |
| Mac (Intel) | ultrathink-x64.dmg | Macs with an Intel processor |
The page lists the row for your own computer first. If you are not sure which Mac you have, open the Apple menu and choose About This Mac: it shows Chip for Apple silicon or Processor for Intel.
Install on Windows
- Run ultrathink-setup.exe.
- Windows may warn that the publisher is unknown: choose More info, then Run anyway.
- Follow the installer. It installs for your own Windows account, so you do not need administrator rights, and you can choose the folder.
- The app starts when the installer finishes. Its icon appears in the system tray at the bottom right of the screen. If you cannot see it, click the arrow that shows hidden icons.
Install on a Mac
- Open the .dmg file.
- Drag Ultrathink into your Applications folder.
- Open it from Applications or Spotlight.
- Its icon appears in the menu bar at the top of the screen.
The first time you take a screenshot or record audio, macOS asks for permission:
| Permission | Needed for |
|---|---|
| Screen Recording | Screenshots |
| Microphone | Voice notes and meeting recordings |
Allow them in System Settings > Privacy & Security. After switching on Screen Recording, quit the app from its menu bar icon and open it again.
Connect it to your account
The desktop app uses a device key instead of a username and password. The key goes in through the tray menu, not the window.
- In the web app, go to Settings > Device keys. Type a name such as “Home desktop” in Device name and click Create key.
- Click the copy button next to the new key. The key is shown only once.
- Right-click the Ultrathink icon in the system tray (on a Mac, click the icon in the menu bar).
- Choose Set Device Key from Clipboard.
- A system notification confirms the key has been saved.
Until a key is set, the window shows “No device key - saves will fail” in red above the note box.
If the clipboard is empty, a notification asks you to copy your device key first. To change the key later, copy a new one and choose Set Device Key from Clipboard again.
Check it works
- Click in the note box and type “Test note”.
- Stop typing. The top of the window says “Auto-saving in 3s…” and counts down.
- When it saves, the box clears for your next note.
- Open the web app. “Test note” is at the top of All items.
The window
The app opens at the bottom right of your main screen every time it starts. Drag its title bar to move it anywhere, including onto another screen. Drag any edge to make it bigger or smaller.
It stays on top of other windows so it is always to hand. When it moves to a screen with a different scaling, it adjusts its size to match.
The title bar
| Control | What it does |
|---|---|
| Ultrathink | The title. Drag here to move the window |
| N overdue | Shows how many tasks are overdue, when you have reminders set up. Click it to open your tasks in the web app |
| Pin to all virtual desktops | Mac only: shows the window on every desktop and over full-screen apps. Click to switch it off or on. Greyed out on Windows |
| Toggle compact mode | Shrinks the window to just the note box and buttons |
| Close | Hides the window. The app keeps running in the tray |
Three sizes
| Mode | What you see | How to get there |
|---|---|---|
| Normal | Title bar, drop area, note box and the row of buttons | The default |
| Compact | Only the note box and the buttons, in a shorter window | Toggle compact mode in the title bar. Double-click the window to come back |
| Expanded | A bigger window with formatting buttons and coloured tabs, for longer notes | The expand button at the right of the bottom row, or double-click the note box |
Capturing with the desktop app explains what each mode is for.
The tray menu
Right-click the tray icon on Windows, or click the menu bar icon on a Mac.
| Menu option | What it does |
|---|---|
| Pause notifications for an hour | Stops task reminders for an hour. While paused, the menu says when they resume and offers Resume notifications |
| Show reminders on this computer | Tick to let this computer show task reminders. See Task reminders |
| Show Widget | Brings the window back |
| Hide Widget | Hides the window |
| Set Device Key from Clipboard | Saves the device key you have copied |
| Open Web Viewer | Opens Ultrathink in your browser |
| Start on Login | Tick to start the app when you sign in to your computer. It starts hidden in the tray |
| Quit | Closes the app completely |
On Windows, a single click on the tray icon shows or hides the window.
The app has no settings window of its own. Everything it needs is in the tray menu, and reminder settings are in the web app under Settings > Notifications.
Updates
The app checks for a new version when it starts and every six hours after that. It downloads the update by itself and tells you with a system notification. The update installs the next time you quit the app.
Common problems
| Problem | What to try |
|---|---|
| Saves fail with “sign in again” | The device key is missing, wrong or revoked. Make a new key in Settings > Device keys, copy it and choose Set Device Key from Clipboard |
| You cannot find the window | Click the tray icon, or choose Show Widget from the tray menu |
| Screenshots come out blank on a Mac | Allow Screen Recording in System Settings > Privacy & Security, then quit and reopen the app |
| The app does not start with your computer | Tick Start on Login in the tray menu |
More help is in Troubleshooting.