Does Whimsical have a desktop app?
Here's how you can install Whimsical on your device as a browser app:
Using the Safari browser, go to whimsical.com and tap the More icon. Then, tap on Add to Home Screen:
Et voila! Whimsical should now appear in your dock and be searchable from Spotlight/Alfred/etc. as an app!
Using the Chrome or Brave browser and go to whimsical.com, then:
Click the Install icon on the right side of the address bar
At the top right of Chrome, click the ... button.
Click More Tools.
Click Create Shortcut.