Are you looking for a free app that helps you to save memory and battery power? If Yes, try Greenify. I have been using this app for over 2 years and it has saved me a lot. Greenify helps you to keep your device run smoothly and save more power for the day in a unique day. Even if you install lots of apps, with greenify your android device won't run slower. Greenify makes this possible by helping you identify and put the misbehaving apps into hibernation when you are not actively using them thus saving battery power and prevent your device from lagging.

How to get Greenify?

1. Go to Playstore
2. Search for Greenify and install the application.
3. Open the app and give permissions and your app will be up and running.

When multiple pictures of a presentation or  notes from white board was taken, you would have felt it harder to combine them together and keep it as one file either as PDF or another format for easy access later. CamScanner helps you to do this very easily. With CamScanner, you can take all the photos in ‘batch’ mode and convert them together to one file and share it or upload to cloud storage in just 2 clicks.

CamScanner can be more efficiently used by students for scanning the notes on the blackboard or PowerPoint slides. Once scanned using the device's camera, they can be converted to pdf documents and stored either in the device or cloud storage (Google Drive, OneDrive, Dropbox, etc.). Appropriately naming the documents will help to search or easily access them later. Another way to organize is adding meaningful tags to your documents, like class notes ,math, language, history, book name, etc.