Simple, elegant unit conversion. Type your question into the box on top and find your results below. Even as you type, results will appear as the app tries to guess your intention. The app is freemium (one time payment of $3 to unlock all features and disable ads).

The app supports free-form typing, so feel free to ask it questions like "How many feet in a mile?", "Convert 15 tsp to tablespoons", and even "1 USD to BTC". Everything except currency conversions will work offline. Hit Convert for even more options.

The app also supports voice recognition and will speak the result back to you if it has an answer. This is complimented by Google Glass support, making it a fully hands-free app if needed.