Halide is arguably the best camera application on iOS and is now even better in its latest version 1.16 update. With this, the developers are improving the raw capture experience, memory management and also introducing something new called Rescue. Let's talk about Rescue first. Rescue is a data loss protection feature that prevents losing images in case something critical goes wrong while shooting. It could be something like the phone running out of battery, getting a call or just a bug in iOS or Halide that could cause the shot you've just taken to never be saved to the photo...
Source: https://www.gsmarena.com/halide_gets_updated_with_rescue_and_improved_raw_support-news-42365.php
