07 June 2013
PDF阅读器（专业PDF、DOC、XLS、PPT、TXT文件阅读器）
可以iPhone上打开多种文件的app。这样小的屏幕能实现功能就不错了，就不要奢求界面和流程了。
Do you check app store every day?
Could you find new apps outside top 20 list?
Will you try all new apps for something really good instead of "optimized" results?