I highly doubt it with the app. In the way you are talking each camera would be brought into the app as separate stream.

When you have an NVR you connect to the NVR and then it allows you to access all of its stream at once.

So during playback you would have to playback each camera individually whereas with the NVR you can playback multiple cameras pulled from a single drive location.

Now with the software on a computer you may be able to playback multiple streams at once and it may work more close to the NVR but expect it to be laggy because you are pulling recordings from multiple streams and SD cards.