AppBrain Ad Detector

This app lets you see information about your installed apps: concerns, ad networks, social SDKs and developer tools. Concerns section tells you if your apps can access your contacts or accounts, may cost you money, can access sensitive data, etc.

AppBrain Ad Detector @ Google Play

Evernote

Great note manager that stores your notes online. It also has a desktop (Mac/Windows) app and a brower app. It's not perfect because you can't edit notes with complex formatting from your phone, but it usually works very well.

Evernote @ Google Play

Wunderlist 2

Nice TO-DO list manager app/widget that also lets you access your lists from a browser and stores your data online so you don't lose your TO-DO's when changing your phone. Check out Trello too.

Wunderlist 2 @ Google Play
Wunderlist 2 @ the web

Trainyard

Draw rails so the trains get to the point that matches its color. I'm not a huge fan of puzzle games but I got completely hooked on this one. I almost completed the free version and paid for more levels.

Trainyard Express (free) @ Google Play
Trainyard @ Google Play

Flash Light Widget

Simple light widget. Just turns your flash led on and off. That's it. And the icon is nice.

Flash Light Widget @ Google Play

Digital Clock Widget

After trying several clock widgets I chose this one beacuse it is simple, displays both the date and the next alarm, and lets you open your favourite alarm program when you tap on it.

Digital Clock Widget @ Google Play

Gunman Clive

Classic platform game where you jump and shoot with a cowboy. Both the design and the game play are fenomenal. I can only complain that it's a bit short, but totally worth what it costs.

Gunman Clive @ Google Play