I'm a long-time journaler. Prior to viJournal shutting down I journaled in that, pretty much daily, for over 8 years. Since it's untimely demise, I've struggled to find a journalling app that fits my usage as well. Even though I own outright several competing journal applications (Day One, MacJournal, Capture 365), at the moment my loyalties are divided between two subscription-based services - this app (Lifecraft) and Dyrii. Dyrii has many useful features, such as templates, that I find useful. However, for simply sitting down and writing about my day, I'm increasingly finding myself using Lifecraft. As for the subscription model, I could use this software for four years for the same price that I paid for Day One on all my devices. And the thing is, Day One, at least on the Mac, has a terrible UI for just writing.
From memory, Lifecraft has many features that can be used without a subscription, so give it a go. All of your entries can be exported as rich text documents if, after a while, you find you no longer want to use it.