Dual Video Recording app, Front and Back cameras

I would like you to create an iphone similiar to the Samsung dual camera application. An app that allows me to record video from both video cameras at the same time. You must make 2 apps for this!!!!! one on ios the other for android! So when you watch the recorded video you can see both videos simultaneously. On your smart screen in normal vertical mode the screen will normally fill the whole screen with video, whereas my app would show the videos from the 2 cameras and make it like 2 screens. The top video feed would be from the back camera and the bottom half of the screen will be used to show the front camera video. my app should allow the user to record from both cameras at the same time and while playing back the recorded videos they will be merged into 1 video, with 1 video on the top half of the smartphone screen and the other video for the bottom half of the screen. This is a simple app. The app is a camera/video app. It allows the user to take a video like normal but with the added benefit of recording the user's face as well by using the rear camera as well as the front camera Once the video is done recording then when the video is played it will show what the user sees on the top half of the screen and it will show the video from the front camera on the bottom half of the screen. Users have the option to record video in full screen mode and in half screen mode using both cameras at the same time. As it may be slightly confusing for people to record a video while looking at themselves as well, so the user has the option to record a video by either just displaying the rear camera on the screen or both cameras on the screen. The user also has the option to take photos too with the same feature of having both cameras taking a picture at the same time