Rotary Tool - Happy version app for iPhone and iPad

[Revolving Tool]
This application is a multi functional utility with a rotating style interface

[Efficient Management]
Efficient management of daily travel arrangements, planning lists, quick and convenient

[Memorandum]
Quick to record your life and work, easy to use, and protect your privacy

[Calculator Tools];
Add, subtract, multiply, divide, basic operations, simple and convenient operation, memory storage, last result, clear function

[Unit Conversion];
Multi unit conversion, length: meters, kilometers, miles, miles, inches, feet, fathoms, furlongs, conversion between code and other units.
Area: square meters, square feet, square kilometers, hectares, square feet, square yards, square inches and other units conversion
Weight: kg, grams, ounces, pounds, tonnes of grains, conversion between DRAM and other units.
Volume: l, a, m, peck, bushel, quart, pint, barrels, gallons of conversion between units.
Temperature: between Celsius and Fahrenheit

[Bookkeeping Book];
Record daily consumption bills. The types of consumption include diet, shopping, entertainment, travel, housing, mobile phones, debt, and so on

[Game Center];
When you are free, you can play and help you relax. 2048 games, fishing games