Android Oreo v/s Pie - Know which one is better and Why?

Judgment Parameters (Android Oreo v/s Pie)

Android Oreo (8)

Android Pie (9)

User Interface 

Owns a traditional display with old-school icons and no shortcut settings menu.  

Has a much-enhanced presentation as it displays a smooth-edged interface with colorful icons and quick dropdown settings menu.  

Dashboard 

Does not provide a dashboard

The pie comes with a fully-featured dashboard displaying the amount of time the user is spending on each application. This feature comes in the form of a pie chart.   

Controlling the time spent on every app

Android 8 had no such facility for the users

Android 9 gives us the facility to decide the time we want to spend on each application. The feature lets us know via a notification once we exceed the pre-set time on that particular application.  

Dark Mode/Sleep Mode

The oreo version undoubtedly had the night mode that pulls out the blue light leaving orange and red pallets to comfort your eyes.  

Android 9 is a step ahead as it gives users the facility of sleep time when the entire screen goes grayscale and has an additional do not disturb mode. 

Brightness 

In the Oreo version, the brightness of the phone adjusts in correspondence to the light around the user.   

Pie adjusts the brightness as per the user’s habits and preferences.  

Battery Adjustment

Has no adjustment for saving the device’s battery backup.  

Pie came with a solution called ‘adaptive battery’ mode. The feature controls the background power usage of the phone applications.  

Artificial Intelligence

Artificial Intelligence and Machine Learning remained un-exposed. 

A lot of possibilities were added with AI and ML like zooming the words while using copypaste, sensing your gestures and simultaneously switching from portrait to landscape and vice-versa, voice assistance and so on.