点券价格：20
CalcPad 是一款Mac上富有创意的笔记本工具，内置了计算换算功能，可以自动帮助我们进行笔记中的运算和换算，比如计算器、单位转换、货币转换等等，很好用！
[CalcPad 在官网上售价3.99美元，约合人民币24元]
CalcPad is a note taking app with powerful calculator built in. It can perform basic calculations as well as complex unit conversions, real time currency conversions and percentages. It can even handle variables and custom functions if you need them. With a handy menubar icon, global access shortcut and window options, it will be your ultimate go-to app for fast note taking and napkin math needs.
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CalcPad for Mac 1.1