What can you do If want to Switch Quickly to another App?!
You should Leave Current app and then find & Select Another app
By using this Application you can create *Floating Shortcuts* of your Favorites Apps & It doesn't limit you to any boxes or toolbars.
Also you can create Floating Widgets Floating Website Bookmarks & Floating Categories (To have some apps in the same place)

OK Google! Open Shortcuts
When you open App using OK Google! voice command.
App Will Recover All your Last Used Shortcuts

Features
+ Shortcuts for All Activities & Actions (Press.Hold on Floating Shortcuts)
+ Floating Widgets: Move it to Right to Automatically Minimize it
+ Group of Shortcuts: Move it to Right to Automatically Minimize it
+ Bookmarks Shortcut to Website
+ Automation Features
- Apps for Time
Shortcut of selected App will create at the specific time every day until user cancels it.
For Example You Set to Create Floating Shortcut of 'Messaging App' at 10:30.
- Apps for WiFi
- Apps for Bluetooth
- Apps for GPS
You can select Necessary Apps from the List then this App will create Floating Shortcuts of selected Apps When turning on the WiFi Bluetooth & GPS
+ 'Floating Shortcuts Launcher' for Smartphones
- Long Press on Home Page & Select Launcher Setting to Setup Swipe Gestures to Recover Floating Shortcuts
+ 'Floating Shortcuts Face' for Smartwatches
Set 'Floating Shortcuts' as Default Launcher & Watch Face to have 'Minimalistic & Smart Launcher' Suitable for Floating Views.

Preferences
+ App Theme Color: Selected Automatically from Wallpaper
+ App Drawer Style
+ Transparent App Theme
- Light
- Dark
+ Shortcut Size
+ Shortcuts Transparency

/*
* Your SmartPhone Wallpaper reflects your Moods & I Respect it.
* Shortcuts App Colors will Change to What you are in Mood for... 😉
*/

/*
* You can also create Floating Shortcuts on Android Wear Smart Watches
*/

Tip: To Remove Shortcut Long-Press on Floating Icon to See Close Icon.
Tip: To Remove Widget Long-Press on Widget Name.
Tip: To Get Activities Shortcut of App Press.Hold Until See List.
Tip: To Resize Widget by Long Press on Launch Button.
Tip: Steady Mode: Automatically Start & Stop. It will Start on First Floating View creation & will Stop when you remove Last Floating View.
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* Open Source Project of Floating Shortcut on XDA
* http://forum.xda-developers.com/android/apps-games/app-floating-shortcuts-t3019241
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