Best Free Personal Development for Android

Best Free Language Learning for Android

A Word A Day (235 KB), learn today's English word from Merriam-Webster dictionary, or download the episode and listen to it, with good examples and meaningful word origins. You can also practice your English word pronunciation with Google voice. 

Duolingo (4.9 MB), a popular and high quality app for you to learn another language from the language you're familiar with, either it's Spanish, French, German, Portuguese, Italian, or English. It's fun, addictive and allows you to track your progress with shiny achievements. No fees, no ads and no gimmicks. 

Best Free Talks and Lectures for Android

TED (4.4 MB), talks at TED events usually last around 30 minutes and cover everything from technology to art to medicine to music. Almost all of the talks are online for you to watch at your leisure or they can even be downloaded with the app for offline viewing. 

Best Free Articles and Answers for Android

HowStuffWorks (4.09 MB), gives you instant access to over 30,000 articles, podcasts and videos with clear explanations of how things work. You can select Featured, Facts, Shows, Read or Quotes, or type your own question and search for the answers which are made simple and easy to understand. 

Best Free Astronomy Software for Android

Google Sky Map (2.2 MB), point your device at the night sky or browse the skies in manual mode from anywhere at anytime and it helps you identify the stars, planets, constellations and other celestial objects with labels. You can also zoom and search the objects with this absolutely fun and good educational app. 

Best Free Sports Tracking for Android

My Tracks (832 KB), record your GPS tracks and view live statistics including time, speed, distance and elevation while hiking, cycling, running or participating in other outdoor activities. You can also share your tracks by sending them to Google My Maps and Google Docs. 

CardioTrainer (5.45 MB), an excellent application to track and record your fitness activity with GPS and pedometer functions. Voice notifications, schedules and reminders, music integration and many more features are included.