||Secure Chat Client (No more on playstore). Use instead of Hangouts. Note SecuXabber is better, but no more on play store. Install it from the SecuXabber sourceforge page
||Email Client supports PGP encrypted emails with OpenKeyChain
||Simple text editor. Replace Notes.
||Encrypt data on cloud storage. Supports Dropbox, Google Drive, local folders
||Antivirus for Android. The paid version is the best out there. Here’s how to buy it on Google Play Store.
||Desktop malware detector available for Android
||Stock Quotes with reminders at prices.
||To do list. Supports SMS scanning to add to ToDo list
||FTP client for android
||No more on playstore. FTP server for android phones. File Transfer
||SQLite database manager
||Web browser for android
||Keepass password wallet on android. Best password manager
||Linux news aggregating app
||No more on playstore. News from WebUpd8
||Network tools for ping, traceroute servers
||OI File Manager
||File Manager. Free, no nonsense file manager
||No more on playstore. Saves APK files. Use to create app backups
||Create pencil sketch from photographs
||No more on playstore. Great motivator to do 50 push ups in 30 days.
||SIM Card Info
||Display SIM card info (Good for nano/micro SIMs)
||Best terminal emulator on android by Jackpal
||Units converter. Beats all hands down
||All in one media player. Now on android
||Analyze wireless network range
||Word search game on android
||SMS to Text
||No more on playstore. Backup your SMS messages to a file
||Father of all bubble shooter games
||No more on playstore. Opens any compressed format files
||Scrabble like game for hours of brain entertainment
||Open Key CHain – PGP implementation on Android. Works with K-9 Mail
||SSH client for Android
||Easy to use Ruler app for Android
||Scan any kind of bar codes, QR codes with your phone
||No more on playstore. Python interpreter for the Android
||Simple Torch App. Nothing fancy, works on non-LED Flash phones and very fit for purpose
||Lists process, network connections and more of your phone. Best app to detect what your phone is doing.
||Best word processor so far on Android. Edits much faster than the others. No lag.
||No more on playstore. Wget for Android. Download anything just like you would with wget on Linux
||Sketch App from Sony Mobile Communication. Allows drawing as well. Has a lot of clipart too
||No more on playstore. Statistics of all notifications of apps on your phone
||Secure zero knowledge encrypted cloud storage service. Currently, only supports file uploads from PCs. Android devices can only download files
||Displays network speed in the status bar at all times. Best in class app to know if network is working
||Best Bass Booster. However, if your device has an in-built audio effects feature, use that
||No more on playstore. Use this to track your walks or jogs.
||No more on playstore. Converts JPG files to PDF. You can also do this with photographs taken with the camera
||Sometimes, music players cannot find music files. Use this to scan storage for media files and build the media database
||Displays all emergency events happening worldwide. Best if you need to know about emergencies worldwide like typhoons, fires and more
||Use this to clear junk files, cache and reclaim RAM on your Android device
||Music Player. Use if you do not have one on your device
||Use this clock on the Moto X (Gen 1) if the built in Alarm App on the Moto X gives a problem
||Audio Recorder by Sony
||One of the best audio recorders
||No more on playstore. This application displays emergency contact on the lock screen. Good to use on phones where the ICE feature is not available
||Messenger app like WhatsApp, offers more security, secret chats, self-destruct messaging and ability to delete account completely if you do want to use it anymore
||One good images manipulation tool on Android. Good for phones with larger memory
||This made it to the list as it was the only one able to invert colors like black to white
||Birthday Reminder that gives alerts based on the birth day entered in Contacts database. THis was the most non-intrusive of all reminders and it works well
||Linux commands app. For Linux Administrators and Users
||File Explorer by Speed Software
||Good file explorer. Use in place of OI Explorer as it has capability to work with files on Google Drive. Also supports multiple Dropbox accounts
||Johnson & Johnson 7 minute workout
||No time for exercise? Use Johnson & Johnson 7 minute workout. Simplest app for a quick workout. Read about why 7 minute workouts are good for you at https://www.positivehealthwellness.com/fitness/7-minute-workout-effective/
||TeamViewer for Remote Control
||Remote control and provide support to users using Team Viewer from an Android phone. Listed here because it is an essential for remote support
||My Local Groups
||Allows creation of contacts in local groups that do not get synced with online services like Google. Very good if you do not want to share your contacts information outside of the phone
||Very good non-intrusive Pedometer for android devices. Does not ask for Location Access
||My Fitness Pal
||Clean Music Player
||Bare bone and completely non-intrusive music player. No special permissions required at all. Couple with Desaxed Studios Bass Booster if you want an Equalizer
||Netguard Firewall (no root)
||This is, by far, the best among all non-root firewalls on the Google Playsore. Worth every penny paid
||One of the best open source and non-intrusive camera apps for Android. Supports white balance, focus and more. Wonder why I did not discover this one earlier!
||Rooted your phone? Here is the better firewall apps for your rooted phone. Will not work without root. Blocks packets by app and connection, including the ability to have custom filters
||Epson has this wonderful utility that works well with it’s all-in-one devices.Who said only HP was the printer king?
||Java Examples to help one quickly brush up knowledge of Java Programming
||Great financial calculator that is easy to use
||Editor for Programmers
||Highly customizable launcher for Android devices. Everything customizable.
||Xodo PDF Reader and Annotater
||Excellent application to open PDF files and annotate them. Good to fill forms, comment on PDF files and proof read.
||Finally a almost thorough port of the GnuCash Application for an Android device. Use this to manage personal finances.
||Learn Java by Sololearn
||Looking for an application on Android devices to Learn Java? This is it. One of the best tutors. Sololearn also teaches other programming languages.
||My Funds – Portfolio Tracker
||My Funds Portfolio tracker allows tracking of stocks and mutual funds. The advantage over JStock is that it tracks Mutual Funds Net Asset Values (NAV) whereas JStock only tracks Stocks. However, My Funds – Portfolio Tracker also tracks Stocks, but only displays the last traded price the next day. That is true for Mutual Funds NAVs too. If you need to track real-time, and are not afraid to share your data, try using valueresearchonline.com or MoneyControl
||Onkyo HF Player
||Audio player for audiophiles. This app allows you to play high resolution audio on your Android device. The sound quality is too good and the preset equalizer settings are ultimate. If you use a good quality headset and Onkyo HF Player, you can ignore the default player on your device.
||@Voice Aloud Reader
||Podcasts are great as they save us time while walking, exercising, or doing something else. This app is a great tool to read aloud PDF documents. Gives a podcast type experience and very useful. Found it to be most non-intrusive among the others.
||Easiest and accurate banking calculator. Use it to compute accrued interest for Fixed Deposits. Most interesting feature is ability to save the results.
||Good utility to view XPS files that you create on a Microsoft Windows computer
||Utility to display leveling of a surface. Make sure the bubble is at 0!
||909 Drum Sequencer
||Play the drums. Reminds me of Hydrogen on a Linux computer
||Panagola SBS Video Player
||Allows you to watch movies using ANT VR headgear
||TTS Reader Pro
||Reads out loud text
||Photos touch up tool like Pixlr
||Need we say more
||Blue Light Filter by Panagola
||Filter blue light from phone display if you work at night. Best app and no eye strain
||Androrec (no more on playstore)
||Poweramp Music Player – Most mature in terms of sound effects and quality
||Powerful mind mapping application. Has a Windows Desktop version too that runs very well in Crossover Office
||Powerful mind mapping application. Use if you do not need a desktop version
||Latest Laws India
||Use to view latest laws for India
||Mint Business News
||Mint newspaper and articles
||The Go To site for everything related to Android ROMS, etc.
||Best Flashcards application is a memory jogger. Available on Linux too
||DND App by TRAI
||DND App by TRAI to register, report Unsolicited Commercial Communication i.e. unwanted SMS and calls
||Citizen Calculator App
||Citizen Calculator application for android. Emulates the calculator CT500, CT512 very well
||CPU Speed Test
||Test CPU Speed of an Android Device
||Use this to take breaks. Pomodroido most appropriate
||Check device hardware. Displays even unheard of information and the best app that does a great job
||Displays all open network ports and the apps that have established connections or are listening on those ports
||Similar to Netstat Plus, but goes a step further, showing server locations on a map
||Great app to enable change in habits over time
||Minimalist not-intrusive Firefox Focus web browser. Do not expect bells and whistles, but plain old web browsing with no trackers enabled
||Fed up with the default Google Now Launcher on your Android device? Use Nova Launcher to customize look and feel completely
||Vanilla Android SMS Messaging App. Use if Android Messages app gives errors
||Keeps Android phone storage clean. Gets rid of orphaned files
||National Digital Library
||Digital Library of books via the National Digital Library
||Car Fuel and Maintenance Tracker
||Kaspersky Mobile Security
||Kaspersky Mobile Antivirus: AppLock & Web Security
||Solid Explorer is a very powerful file manager for Android devices. Supports encryption and hidden folders
||Best app to train the brain to recognize visually. Level 2 is really tough
||One stop app for all government services on your Android
||Another Office Suite for Android. Powerful and small.
||Powerful Task Manager for Android
||Offline Survival Manual
||Offline Survival Manual. Good for trekkers or hikers
||Municipal Corporation of Greater Mumbai
||Use this app to connect with the municipal corporation
||Cyber Law and Data Privacy App
||Use this app to learn about cyber law and data privacy in India.
||Contacts App by Google (New)
||Revamped Google Contacts App. Works seamlessly to sync and update Android Phone Contacts
||Keep track of latest law news
||Very small size sound recorder. Simple, no bells and whistles
||Digilocker by Meity India
||Mumbai Traffic Police App. One of the best apps by law enforcement.
||Regional Transport Office App
||Simple and sweet stellar viewer. Point to see what’s above you in the sky
||Code Scanner (no ads)
||QR Code Reader, very simple with no ads and does what it says
||Lekh Diagram is a simple and effective flowchart maker for Android