Speak & Translate app allows you to add widget to your device's Notification Center and translate the saved phrase without entering the app itself.
To add a widget - follow these simple steps:
1. Tap and drag down the top of your device's Home screen.
2. Swipe notification screen to the right in order to see widgets. Then scroll the screen up till you see Edit button.
3. Tap Edit button to see available widgets.
4. Tap + next to the Speak & Translate widget and tap Done.
Now you will be able to see the Speak & Translate widget every time you open Notification Center on your device.