The app is simple and works well as a diary. It exports single entries as it should. However, I cant figure put how to export the whole diary as a single file as the description of the app says although the reason I purchased the app was because it offered this feature.
Edit: I finally found out that you need to go to Settings to export the whole diary, which a handy feature and what I miss in other apps. There is a bug and one cant edit and delete the tags one has created. Since I dont need tags, it doesnt bother me, though.
twigabc about Dailybook Journal Diary, v2.9.1