I then iterated on the code from MeBot project to build the interaction between Journally and users when recording a new journal. I then set a daily schedule on Heroku that can send a daily reminder to the users. After that, I built a database using two models in the data diagram - user and journal. Journals are linked to users with user_id. Each journal is created by adding a date, so whenever the user wants to add/update journal, the journal will be found by querying the created date, so s/he would not create duplicate journals, which is a mess.