I am surprised I could not find any info about this. How can one see entries without tags? In most similar apps, there is a button "no tag" or "untagged" to list all the untagged entries. This is useful if one decides to assign tags and, instead of going one by one, could see only those without tags.
Sorry, if this is something that is well known and I just do not see how to do it.
Diarium version: PRO, latest, auto-updated
OS + version: Android, Windows , MacOs, iOS (all purchased PRO versions)