One of the reasons why Sky's popularity in the Android operating system is its huge app window. And these are basically available in the Google Play Store. It is not a hundred or thousand. There are several million apps there. Today you will know about so many popular and necessary free apps among so many apps.
1) WPS Office - Word, Docs, PDF, Note, Slide & Sheet : This app seems to be the most important thing to me personally. Today's list is on the number one place  in the app. It can be done in almost all Microsoft Word, PowerPoint, Excel. 
![wps-office.jpg](https://ipfs.busy.org/ipfs/QmP46AdYJojq1TdugBk43prjHcoJnqKhLkbdDakzKB8m5K)
[source](https://apkpure.com/l)
2) Dropbox : Dropbox offers cloud storage services similar to Google Drive. Dropbox can be used for free. The best      thing about Dropbox is its graphical user interface. It is very easy to use. 
![dropbox-product-image.png](https://ipfs.busy.org/ipfs/QmZdhotH7MMQoBqA9JspytgmUrZZ7xv8aWSTWFRsZkQXLU)
[source ](https://easydigitaldownloads.com/)
 3) Google Drive :   The best storage app Google Drive offers cloud storage service. you can use for up 15 GB without payment. I am rewarded with this app. 
![g-d.jpg](https://ipfs.busy.org/ipfs/QmYis9NEyhYudc8tr47Nawxk6ujgk7R39q8zc3nsQjL8yu)
[source](https://www.techincludes.com/guide-how-to-use-google-drive-on-android-phone-to-scan-your-documents/)
4) Google Keep :   Every day we have to keep notes on different issues. In the previous days, a diary was kept for these things. When you have an Android phone, then what is the thought! Quickly remove this app from PlayStore. In addition to the notes, small files and images can also be pinned in this app. This app can be free from the Google Play Store.  ![1_571SzGjMUtQyoDUXfFjp1g.gif](https://ipfs.busy.org/ipfs/QmRB4szZNRT4fRMvxNQuCx1ePjsc8UvZECoKBZ12wHiLfu)
[source ](https://medium.com/@chipham_29386/google-keep-is-it-a-keeper-7b4a0c182ac4)

5) Duolingo: Learn Languages Free :   This is an extraordinary Android app for learning different languages. This app is a beautiful platform for learning languages ​​like French, German and Spanish, as well as English. A user can learn from here by participating in the quiz on many levels. There are also provisions for Continuous Assessment. This app will also show you progress in any language. Along with the opportunity to challenge the friends and the opportunity to make yourself more engaged through the competition. 
![46f12a37d0502441f09d30f181fe8891.jpg](https://ipfs.busy.org/ipfs/QmUTJqm4H541hgsCppD7kFnBFfgzSB3nkRpNdPLCtid1XH)
[source ](https://www.pinterest.com/pin/399131585696370209/)