Fiume vs Day One
Day One is a mature, much-loved journal for recording your life across devices. Fiume is a newer AI journal built around speaking and talking things through. Here is how they differ, from Day One’s own App Store page and our product page.
Download on the App StoreFor iPhone, iPhone Duo, iPad, and Apple Watch · iOS 18.0 or later
Side by side
Day One facts are from its App Store page (US), checked November 2, 2026.
| Fiume | Day One | |
|---|---|---|
| Made by | hecara | Bloom Built Inc |
| Devices | iPhone, iPad (iOS 18+), Apple Watch | iPhone, Apple Watch, iPad, Mac |
| Voice | Record for as long as you need; turned into tidy, titled text | Voice recording and transcription (Premium) |
| AI | Fio, an AI companion with memory; conversations with philosophers | Not covered on its App Store page |
| Looking back | Weekly Insights (Pro), unlocked after journaling on 3 days in a week | On This Day, map view, calendar view, streaks |
| Privacy | Face ID locked folders; works offline and syncs | End-to-end encryption; passcode, Touch ID or Face ID |
| Extras | Journal Co-Writing replies to your entries; Action Button and Apple Watch capture | Photos, video, drawings, templates, printed books |
Choose Day One if…
- you want one journal across iPhone, iPad, Apple Watch, and Mac;
- your entries are rich with photos, video, and places;
- you care about end-to-end encryption and printed books of your journal.
Choose Fiume if…
- you would rather speak than type, sometimes for a long time;
- you want an AI companion, Fio, that remembers what you told it and helps you act on it;
- you want to think a decision through with Socrates, Freud, Jung, Aristotle, or Kant;
- you want Fio or a philosopher to reply to your entries (Journal Co-Writing), and Weekly Insights (Pro) once you journal on 3 days in a week.
FAQ
- Can I use Fiume and Day One together?
- Yes. Some people keep a long-term photo journal in Day One and use Fiume to talk through ideas and days by voice.
- Does Fiume have a Mac app?
- Fiume runs on iPhone, iPhone Duo, iPad (iOS 18.0 or later), and Apple Watch.
Sources
Day One facts checked against its App Store page (US) on November 2, 2026.