Disclosure: we make Goodnight Journal, so we are not a neutral party here. We have tried to write the comparison we would want to read — including the cases where the other app is the better choice.
Day One is the best-known journaling app there is, and it deserves the reputation. If you are comparing it with Goodnight Journal, you are comparing two genuinely different ideas of what a journal is for — not two versions of the same thing.
The short version
Day One is for capturing moments. Text, photos, video, voice notes, location, weather, all woven into a rich entry you will enjoy looking back through.
Goodnight Journal is for writing things down. Plain words, private by default, with the option to share an entry with a community of other journal writers.
One is closer to a beautiful scrapbook. The other is closer to a diary.
Where Day One is the better pick
You are deep in the Apple ecosystem. Day One started on Mac and iOS and remains at its best there. The integration, the polish and the attention to detail on Apple devices are genuinely ahead of everyone else, us included.
Your journaling is visual. If what you want is the photo of the meal, the place it was taken and a line about who you were with, Day One handles that better than any app on the market. Our entries are built around text first.
You want end-to-end encryption. Day One offers it, and if that is a hard requirement, it should decide your choice on its own.
You want the “on this day” experience. Day One is excellent at resurfacing what you wrote a year or five years ago, which is one of the real long-term pleasures of keeping a journal.
If those describe you, use Day One. We would rather you kept a journal somewhere than bounced off ours.
Where Goodnight Journal is the better pick
You want to be read, sometimes. This is the thing Day One structurally cannot offer. Its journals are private, full stop. Ours are private by default with a door you can open one entry at a time — and for a lot of writers that optional audience is the difference between journaling for three weeks and journaling for three years.
You want to read other people. Day One has no community. If part of what draws you to journaling is reading honest writing about other people’s ordinary lives, that is a large gap.
You work on Windows, Android or in a browser. Day One has expanded beyond Apple, but it is still clearly an Apple-first product. We were built web-first, so a Windows laptop and an Android phone are not second-class citizens.
You want writing, not curation. Rich media is a feature until it becomes a small obligation — finding the right photo, tagging the location. Some people write more when the entry is only ever going to be words.
An honest note on scale
Day One is a mature product from a much larger company, with the team and release cadence that implies. We are smaller. If what you want is the most polished, most feature-complete journaling app available, that is a fair reason to choose Day One, and we would rather say so than pretend otherwise.
What we offer instead is a thing it does not have at all: somewhere your journal can be private and still not be lonely.
How to decide
Ask what you will want in five years.
If the answer is a beautiful record of what happened — photos, places, moments — choose Day One.
If it is a record of what I actually thought and felt, and the sense that I was not the only one — choose Goodnight Journal.
For how both compare against the rest of the field, see our best personal journal apps roundup.