Day One is my pick of the best journaling apps if you want photos, on-this-day reminders, and prompts without building the habit from a blank page. Apple Journal is the best free option on an iPhone, and it is the more private default if you do not want another company holding the diary. Diarium is the pick when you want a one-time purchase that also runs on Windows.
Most people do not need any of them. A locked note is a journal. Pay when the reminder and the photos are the difference between writing and meaning to write.
The short answer
Day One for a full journal habit. Apple Journal if you are already on iPhone and want it free. Diarium if you want to pay once and include Windows.
Top picks
Best journaling apps
Entries hold text, photos, and voice. On this day is the feature that makes a three-year-old entry useful instead of buried. The writing screen stays quiet, which matters more than the template gallery.
Apple Journal
iPhone users who want suggestions from photos and workouts without a new account
Visit Apple JournalThe app suggests moments you might write about. You can ignore them. Entries stay in Apple's stack, which is the right trade for a lot of people and the wrong trade if you ever leave the iPhone.
A plain editor, optional context from your calendar and photos, and no subscription hovering over a diary. That combination is rarer than it should be.
What the best journaling apps should refuse to do
They should not turn a diary into a streak you feel guilty about. They should not require a public profile. A prompt is useful. A social feed of other people's mornings is a different product, and it will change what you are willing to write.
Encryption and a passcode matter more here than in a grocery list. Turn them on. Then write something dull, so the app is not only for crisis days. Dull entries are how the habit exists on a normal Tuesday.
Who should skip a journaling app
If you already write a daily note in Obsidian or Apple Notes and you like it, stop shopping. A new app will feel like progress for four days.
If you need the journal for clinical records or a legal situation, ask the professional what they want. A consumer diary with a nice font is the wrong archive.
How we tested these journaling apps
Last tested September 2026. I wrote a short entry every day for two weeks in each app, including photos on half the days, on an iPhone 16. Diarium also got entries on a Windows 11 laptop. I turned on passcodes, ignored prompts on purpose for three days, and tried the export or share flow at the end.
Day One was the one I opened without negotiating, mostly because the photo suggestion was already there. Apple Journal's suggestions were sometimes eerily specific and sometimes a workout I did not want to narrate. Diarium was the least pushy and the easiest to trust with a one-time purchase. None of them made a bad day more profound. That is not their job.
I did not test Day One's family or shared journals, therapy integrations, or long-term encryption audits. Read the current privacy policy of whichever app you pick. The words change.