Features:

* Support many types of unit (weight, length, area, volume/capacity, temperature, power, speed, pressure, computer memory units)

* Multi-country currency conversion (auto update exchange rate)

* Supports the units of measurement commonly used in Asia (for example: Hong Kong's tael, China's catty, Taiwan's ping, Japan's jian)

* Real-time conversion (Keep updating the result when user is updating the input)

* Automatically save the last used unit, so that you can use it faster next time

* Support negative number

* Support portrait and landscape interface

* Support three languages (Traditional Chinese, Simplified Chinese, English)