iControlPhoto is designed for refine the control of Photo Stream, You can:
1.disable upload picture.
2.disbale download picture.
3.disable screenshot upload.
智能照片流可以精细化控制照片流。你可以：
1.禁用照片上传
2.禁用照片下载
3.禁止截屏图像上传
Configure options in settings app.
See larger Screenshots below..