Below is the list of most useful Android Apps.
- ES File Explorer :Very useful full featured File Explorer. This is not only file explorer but with many apps viz: Music Player, Gallery, GoogleDrive Sync, Windows PC LAN accessing from yout android, App backup/send via bluetooth and many more.
- Advanced Task Killer (Rechild): To Kill background running apps.
- Barcode Scanner: Capable of reading the information on Line and matrix bar codes.
- Battery Notifier (Big Text): Displays the Battery Percentage on the Notification Bar
- Droidwall (Rodrigo ZR) [Root Needed]: Application that you can use as firewall to permit/deny Network Data usage per application basis. This will be particularly useful to block apps showing annoying ads instead the apps purpose is not to use Network access. E.g. Kal Sientific Calculator donot need internet access but will use to show ads.
- Adblock Plus for Android [Root needed]: This app is removed from Google Playstore because this app stops the app developers revenue source. It obviously will block all ads from Apps and webpages you surf too.
- Hacker's Keyboard (Klaus Weidner): Change android traditional keyboard with fulfeatured QWERTY Keyboard.
- HandWallet : Application to keep track of our daily financial transactions (Income, Expense, Loan & Bank Accounts).
- Kal Scientific Calculator : The name of application is enough. The out of the box feature is that we can draw graphs of any single variable function with it.
- KSWEB : WAMP, XAMPP counterpart for Android platform with Apache, MySQL, PHP Server.
- Ulti Server: Counter part of KSWEB.
- nLocate: Nepali application to keep track (Location and contact no.) of various Offices, Financial Institution, Cafes etc.
- Offiline Dictionaires: A collection of Various languages offline dictionary packages.
- PowerMax: Application to negotiate the mobile phone battery usage to longevity of battery life.
- SuperCHM : .chm Compile help file (Only product of Windows OS) reader.
- Math Cheat Sheets Free : Consist of very useful Mathematical formula collection:
- Trigonometry App: App for useful trigonometical formula.
- Nepali Dictionary-Offline:Two ways - English to Nepali Dictionary and Nepali to English Dictionary
- Smart Cover Lite (skyarmy): If your android phone have Proximity Sensor (Almost all smartphone have) and you are using Flipping cover then you can automate screen off action when you flip the cover off then this might help you to a great extent.
- Notification History ( Evan He. ): Unless your Smartphone OS if less than Jellybean you cannot track which application is making the notification and also what if you miss any notifications displayed on the screen. This is the solution that keeps track of all notifications displayed on your notification bar.
- Airdroid ( SAND STUDIO ): This application enable you to control your phone via your PC if both of them are connected to same WiFi zone.
- Google Keep : This have same feature as that of windows sticky notes. The contents are Synced to you google account.
- Computer Networking Concepts ( Z Series Innovations) : This gives fundamental concept of Computer networking. I tried other's too but this is ads free and systematic so I liked this.
SMS Backup+ : Backup your SMS+Call Log to your Gmail account and place this simply as email items with a Label of SMS. This is simple, light weight and really fancy stuff.