Are you looking for a way to save Instagram Stories without getting caught? Here are some alternative apps to screenshots.
Via Story Saver and Story Save
StorySaver and Story Save are two similar applications that can be downloaded from the Play Store. When the app opens, you are asked to log in, then as the main screen you will find the stories of the people you follow. If you want to download the stories of other profiles, simply look for them with the magnifying glass in the upper right corner.
Instagrab is a application downloadable from the Play Store that allows you to save and post to your profile the stories and posts of other Instagram users. To use it you need to log in with your account. Warning: it does not work if you have active two-factor verification.