Define
If you do a lot of reading, you’re learning English, or you just have a curious mind, Define is the perfect addition to your Android device. It’s an offline, device-wide word lookup tool that provides definitions, synonyms and different usages of any copied word through an unobtrusive pop-up window or notification.
There are a choice of three dictionaries: Livio, Wordnet and Urban Dictionary, with the latter only working when you’re connected to the internet.
Pixolor
Pixolor is a live eyedropper tool that floats over any screen in the form of a persistent notification. It lets you view the hex value for any individual pixel, create color palettes based on the current selection and view the nearest material design color, amongst other things.
The app is certainly most useful for designers, but the pinch to zoom feature might also be of use to those with poor eyesight.
There is an initial ad-free period of use, after which some ads will appear, but they can be removed by paying US$1.99.
Khan Academy
Khan Academy began producing free and openly available videos and learning resources in 2006. They mostly cover math, physics and science, but offer limited coverage of other subjects, as well. All of Khan Academy's material is freely available on YouTube, but the newly launched Android app offers a quick and simple way to navigate and access its material, of which there is loads.
It has more than 10,000 videos, as well as in-depth articles in fields such as arithmetic, algebra, geometry, trigonometry, statistics, calculus, biology, chemistry and physics. We highly recommend spending some time exploring and an afternoon or two learning with Khan Academy. It's free, accessible and fun!
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