I’ve been using this app for almost a year. I have no changed my settings in that time - back up ever 12 hours or when idle for 10 minutes. While the idle part never really seemed to work properly, the every 12 hours was pretty clockwork. In recent months, however, (perhaps with the latest version) it will often go 2-3 days between backups, unless I manually tell it to do so, and even then it won’t always start. Even a restart of the app doesn’t always prompt it to work properly. I purchased this app so I wouldn’t have hourly backups flooding my drive, but also wouldn’t have to think about making sure it was actively backing up either.