The best diary app for iPhone depends on what you keep a diary for. Day One suits media-rich journaling, Apple Journal is a solid free built-in option, YearDiary is built for multi-year diaries, and Diarium is the pay-once choice.
Full disclosure before anything else: YearDiary is our app. It appears in this guide because it genuinely belongs here, but you should read its entry knowing who wrote it, and we have tried to be as blunt about its limits as everyone else's.
One more thing worth saying up front. A diary app is not like a to-do app you might replace next spring. If it works, you will be pouring years of your life into it. That changes what matters: privacy, export, and pricing you can live with for a decade all weigh more than any single flashy feature.
The short version
| App | Best for | Pricing model | Stands out |
|---|---|---|---|
| Day One | Media-rich journaling | Free tier, then subscription | Maturity, photos, cross-platform |
| Apple Journal | Trying journaling at all | Free, built in | Suggestions from your day |
| YearDiary | Multi-year diaries | Free, optional premium or lifetime | Shows 1, 5, 10 years ago today |
| Diarium | Pay-once purists | One-time purchase | No subscription, many platforms |
| Journey | Cross-platform users | Free tier, then subscription | Works far beyond Apple devices |
| Daylio | Mood tracking | Free tier, then subscription | Journaling without writing |
Day One: the established heavyweight
Day One has been around since 2011 and it shows, in the good sense. The writing experience is polished, entries can hold photos, video, audio and drawings, and it runs on iPhone, iPad, Mac, Android and the web. End-to-end encryption is available for synced journals. If your diary is a scrapbook of your life as much as a text record, this is the most complete tool on the list.
The honest downsides: the free tier limits you to one device and one photo per entry, so in practice most committed users end up on a paid plan. As of mid-2026 the paid tiers are Silver at $49.99 a year and Gold at $74.99 a year, the latter adding AI features. That is a meaningful ongoing cost for a lifelong habit, which is exactly why Day One alternatives is such a common search. It has its own On This Day view, though the app is organized around a stream of entries rather than the year-over-year date format.
Apple Journal: the free default
Apple's own Journal app started on iPhone in iOS 17.2 and now runs on iPad and Mac as well since the 26 releases. It is free, pre-installed, locked behind Face ID, and its journaling suggestions, built from your photos, workouts and places, are genuinely clever at prompting an entry on days when you have nothing to say.
Its weakness is depth. Organization is a scrolling feed, and the features that make a diary rewarding over many years, like structured looking back and flexible export, are thin compared to dedicated apps. We compare it properly in Apple Journal vs a dedicated diary app. As a free way to discover whether journaling suits you, though, it is excellent.
YearDiary: the multi-year diary (ours)
YearDiary is a private digital 5 and 10 year journal for iPhone, iPad and Mac that shows what you wrote on the same date 1, 5 and 10 years ago. That is the whole idea. You write a few lines a day, and every day the app hands you your own past first: last year's entry, then five years, then ten. It is the classic 5 year journal format with the page-flipping automated. There is no account to create, and entries live on your device and in your own iCloud, so we could not read them if we wanted to.
The honest downsides: it is Apple-only, so if you ever move to Android your diary format moves with difficulty. It is also a young app from a tiny team, without the years of polish Day One has. The core is free; a premium tier exists as a subscription or a one-time lifetime purchase, so nobody is forced to rent their own diary.
Diarium: the pay-once workhorse
Diarium's pitch is simple: you buy the app once per platform and you own it. No subscription, ever. It runs on an unusually wide set of platforms, including Windows, and syncs through your own cloud storage rather than the developer's servers. The interface is more functional than beautiful, but functional for a decade at no recurring cost is a trade many people will happily take. If subscriptions are your dealbreaker, start with our guide to journal apps without a subscription.
Journey: the cross-platform option
Journey covers the widest ground: Apple devices, Android, Windows and the web. If your household or your life mixes ecosystems, that flexibility is its strongest card. The full feature set sits behind a subscription, and the privacy model relies on cloud accounts rather than staying device-local, so read the details before committing years of writing to it.
Daylio: journaling without writing
Daylio is technically a mood tracker rather than a diary. You log your mood and activities with taps, and writing is optional. That sounds like cheating, but for people who freeze in front of a blank page it is a real solution, and the statistics it builds over months are surprisingly revealing. If you want words, though, pair it with something else or pick a writing-first app from this list.
How to actually choose
Ignore feature lists for a moment and ask three questions.
- Where do your words live? On your device and your own cloud, or on the developer's servers? A diary deserves the strictest answer you can get. Our guide to private diary apps goes deeper on how to check.
- Can you afford it for ten years? A subscription is fine if the app earns it, but do the decade math before you commit. Pay-once and free-core models age better for a lifelong habit.
- What will make you come back? Media features look great in screenshots. In year two, what brings most people back is rereading. If that appeals to you, formats built around looking back, like a 5 year journal app, have a built-in advantage.
Our recommendations by person
- You have never journaled: start with Apple Journal today, free. Move when you outgrow it.
- You photograph everything: Day One, and accept the subscription as the cost of the archive.
- You love the idea of reading this day last year: YearDiary, or a paper five year book if screens put you off.
- You refuse to subscribe to anything: Diarium, bought once.
- You live across Apple and Android: Journey, or Day One.
- Writing feels like homework: Daylio, and let taps count as entries.
Two of these deserve a longer look than a roundup allows. We put our own app head to head with the market leader in YearDiary vs Day One, including the cases where Day One is the better buy. And if you mostly write at a desk rather than on a phone, the best journaling apps for Mac are a slightly different shortlist.
Still not sure an app is the right home for this at all? That is a fair question, and we take it seriously in pen and paper or digital, where paper wins more rows than you might expect from a company that makes an app.
Any app on this list beats the app you download and abandon. Pick the one whose daily thirty seconds you can actually imagine doing in February, and let the years do the rest.