Best Apps Market

Nice app to discover good apps and games. Check also App Sales.

Best Apps Market @ Google Play

Timpik

Brilliant service for organizing sport events with your friends or other people. Join an event or organize one. If you like to practice sports you will love it!

Timpik @ Google Play
Timpik @ the web

Duolingo

Fun app to learn languages. It uses gamification so you earn points and advance through levels. They also have a web site.

Duolingo @ Google Play

Duolingo @ the web

Trello

A great organization tool that takes your TODO lists to a new level. Lately they added a feature to add items (cards, they call them) from email. You might also like Wunderlist 2.

Trello @ Google Play
Trello @ the web

Plants vs Zombies

I don't like tower defense games so I don't know how I got so addicted to this game. Maybe it's because of its nice graphics and original characters. One of my favourite casual games.

Plants vs Zombies @ Google Play

Puzzle Retreat

I'm not a huge fan of puzzle games but this one got me addicted. Graphics are nice, controls are responsive and levels keep you interested.

EDIT: Puzzles feel quite repetitive after you know all the types of tiles so don't expect new things in the paid levels.

Puzzle Retreat @ Google Play

10000000

This is a tile matching game with a twist. It combines RPG elements and what you do when matching tiles affects the character that advances through a dungeon, killing monsters and opening doors and chests. Simple and addictive.

10000000 @ Google Play