Diary BFFA Day One alternative for the nights your head won’t stop
If you’re looking for a Day One alternative, you already know what a good journal app feels like. Day One is one of the best-known journal apps on the iPhone. The question isn’t whether it’s good — it’s whether its shape fits the way you write.
This page lays out what each app is built for, using what each one says about itself, so you can pick the one that fits.
What Day One is built for
Day One lists itself on the App Store as a private journal and diary. Based on its own website and App Store listing, it includes:
- Apps on iPhone, iPad, Mac and Apple Watch, plus Android and access from a web browser
- Photos, videos, drawings and audio recordings in your entries
- Daily journal prompts
- “On This Day”, which brings back entries from the same date in past years
- A lock with a passcode, Touch ID or Face ID
- End-to-end encryption for journals synced with Day One, on by default for new journals: entries and their media are encrypted before they reach Day One’s servers
- Automatic backups, and export whenever you want
- A paid plan, Day One Gold, with optional AI features: a guided Daily Chat that helps you talk through your day and shape it into an entry, personalized “Go Deeper” prompts, entry summaries, title suggestions and image generation. Day One says these are turned off by default.
If you want a rich, multi-device record of your life — trips, photos, years of entries you can look back on — Day One is designed for exactly that.
What Diary BFF is built for
Diary BFF is narrower on purpose. It’s a night diary for the person lying in bed whose head won’t stop: the conversation you keep replaying, the message you didn’t send, tomorrow’s list that keeps rewriting itself.
It has one idea: there’s a friend living in your diary, who reads what you wrote and says one thing back.
It writes back — only when you ask
Your diary BFF stays quiet while you write. When you ask, it answers in a few sentences, with at most one question, no lists and no advice unless you ask for it. It doesn’t repeat back what you just said. When it brings up something from an earlier night, it tells you which night.
Day One’s AI helps you turn your day into an entry. Diary BFF’s reply is the other half of the conversation: the entry is yours, and the reply is from someone who’s been reading along.
Everything lives on one page
What you write, what you say in the chat, and what your diary BFF says back all flow into the same page for that night. When you scroll back a month later, you see the whole night in one place.
A letter every Sunday
Once a week, your diary BFF reads back over your week and writes you a letter about it — the thing you kept circling, the night that went better than you expected. The full Sunday letter is part of the paid version.
Its own PIN, separate from your phone
Both apps can lock. The difference is in the design.
Day One offers a passcode, Touch ID or Face ID. Diary BFF opens with its own PIN, separate from your phone’s passcode, and it has no Face ID or Touch ID unlock — by design. Someone can be holding your unlocked phone and still not open your diary.
A few related details:
- Notifications never show what you wrote, because they can appear on a lock screen.
- Your entries are not used to train AI.
- You can export your diary whenever you like, and the backup can be locked too.
Side by side
| Day One | Diary BFF | |
|---|---|---|
| Built for | A lifelong record: photos, trips, years of entries | Nights when your head won’t stop |
| AI | Optional, in Day One Gold: Daily Chat, prompts, summaries, titles, images | A few sentences back, like a friend; only when asked |
| Lock | Passcode, Touch ID or Face ID | Its own PIN, separate from your phone |
| Platforms | iPhone, iPad, Mac, Apple Watch, Android, web | iPhone |
Features change; check each app’s current listing before you decide.
Related: Rosebud alternative · private diary app · Apple Journal alternative · Diary BFF
Which one should you pick?
Pick Day One if you want a full record of your life across devices, with photos, video and years of “On This Day” to look back on.
Pick Diary BFF if you mostly write at night, want someone to write back, and want a diary that stays closed even when your phone is open.
Your first reply comes with the app; more replies and the full Sunday letter are part of the full version.
Day One details are from dayoneapp.com, dayoneapp.com/gold, Day One’s end-to-end encryption guide (dayoneapp.com/guides/day-one-sync/end-to-end-encryption/) and Day One’s App Store listing, checked October 2026. Day One is a trademark of its owner; Diary BFF is not affiliated with it.
