This looks like a version of AnkiMobile Flashcards , the official iOS application for the Anki spaced-repetition system.
Installing unauthorized .ipa files (sideloading) can allow malicious code to access your phone data. This looks like a version of AnkiMobile Flashcards
Files with complex, unofficial names, especially ".ipa" files from unknown websites, are often used to distribute malware or unauthorized, modified versions of apps (often referred to as "tweaked" or "cracked" apps). especially ".ipa" files from unknown websites