https://wccftech.com/use-doubletake-for-ios-to-record-videos-from-two-camera-sensors-simultaneously/

When Apple announced the latest iPhone 11 and 11 Pro models in September, it showcased a demo with the ability to record videos from different cameras at the same time. Now, FiLMiC Pro's new iOS app has been released which performs the same purpose. DoubleTake is available for free on the iOS App Store and works on all iPhone models launched in 2018 and 2019.

Initially, the functionality was to be integrated as part of the FiLMiC Pro app. FiLMiC Pro missed its intended release deadline but the feature will still be part of the mix. As of right now, the company released an independent app called DoubleTake with the same multi-cam mode and it will make its way to the FiLMiC Pro app later this year.