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What is Diarium?
Diarium is a private journaling app for Windows, Android, iPhone, iPad and Mac. You can start writing without creating an account, and entries can stay on your device; syncing across devices is optional and uses your own cloud storage (OneDrive, Google Drive, Dropbox, iCloud or WebDAV). It is aimed at people who want a full-featured diary rather than a social or cloud-first notes service.
What you can do with it
- Write richly formatted entries with lists and links, and attach photos, videos, audio, PDFs or other files.
- Organize entries with tags, locations and timestamps, including multiple entries per day.
- Revisit past writing through calendar, timeline, gallery and map views, plus "On this day" reminders.
- Add context automatically from services you already use, such as photos, calendar appointments, social posts, fitness data and weather.
Who it suits
It fits someone who keeps a personal diary across several devices and wants control over where the data lives. A concrete example: you write on a Windows laptop at home, add photos from your phone during a trip, and sync through your own Dropbox account. If you mainly want quick notes shared with other people, a collaborative notes app may be a better fit.
Trade-offs to weigh
The app's own description says sync requires the Pro version, which is a one-time purchase per platform, and that no subscription is involved. That per-platform model can matter if you use several operating systems: check what you get on each platform before buying. Local-only use is the simplest privacy choice, but without sync your entries won't follow you between devices.
As a next step, decide whether you need cross-device sync. If you do, confirm your preferred cloud provider is supported and that the Pro purchase covers the platforms you actually use; if not, the free local setup may be enough.
How does Diarium keep my journal private and where is my data stored?
Diarium keeps your journal private by not requiring an account at all: you can start writing without signing up or logging in, and entries can stay on your device. On-device protection includes a password, PIN or biometrics, and the app states it has no advertising. When you want the same journal across devices, sync is optional, requires the Pro version, and runs through cloud storage you already control — OneDrive, Google Drive, iCloud, Dropbox or WebDAV — rather than a Diarium-run account.
Where your data actually lives
- Without sync: on the device where you write, protected by your device and the app's password/PIN/biometric lock.
- With sync enabled: in your chosen cloud provider's storage, so access and retention follow that provider's settings and your account there.
- Attachments count too: photos, videos, audio, PDFs and other files are part of your entries, so they travel with the same storage and sync choices.
Practical way to decide
If privacy is the priority and you mostly write on one device, skip sync and rely on the app lock plus your device passcode. If you need the journal on a phone and a laptop, enable sync with the provider you already trust and already secure with two-factor authentication, and check that provider's recovery options before you depend on it.
A concrete example: someone who journals on an iPhone and a Windows PC would enable sync through OneDrive or iCloud, confirm the cloud account has strong login protection, and keep the app's PIN or biometric lock on each device. The trade-off is that your privacy then depends on two things — the app's local lock and your cloud account's security — so a weak or shared cloud password becomes the weak link.
For a second opinion on privacy-first journaling generally, Diarium is the product itself; independent writing on local-first and encrypted note apps can help you compare approaches before committing.
How do I sync my diary across Windows, Android, iPhone, iPad and Mac?
Sync in Diarium is optional and runs through a cloud storage account you already own: OneDrive, Google Drive, iCloud, Dropbox or WebDAV. You don't create a Diarium account or log in to a Diarium server. Sync requires the Pro version, so the practical path is: install Diarium Pro on each device, point every device at the same cloud folder, and let it keep entries updated across Windows, Android, iPhone, iPad and Mac.
A concrete setup sequence
- Pick one storage provider and use it on every device. OneDrive or Google Drive is the least friction if you already use them on both Windows and Android; iCloud is the natural choice if your devices are mostly Apple; WebDAV suits people who run their own server or use a provider like Nextcloud.
- Install Diarium Pro on each device and enable Cloud Sync in settings, choosing the same provider and the same account on all of them.
- Write a short test entry on one device, wait for it to sync, then confirm it appears on a second device before trusting the setup with months of journaling.
- Check the sync status after the first full pass, since a large backfile of photos and audio takes longer than text.
Choosing a provider
| Provider | Fits well when | Trade-off to plan for |
|---|---|---|
| OneDrive | You use Windows plus Android or iOS | Free tier space fills quickly with media attachments |
| Google Drive | Android-heavy setups, existing Drive storage | Storage limits shared with Photos and Gmail |
| iCloud | All-Apple households | Awkward to reach from Windows and Android |
| Dropbox | Mixed devices, simple folder sharing | Smaller free quota than some alternatives |
| WebDAV | Self-hosters and privacy-first users | You handle server maintenance and backups |
Practical cautions
Sync is not a backup. If an entry is deleted or a file is corrupted, the change propagates. Keep an occasional manual export or a separate backup of the cloud folder. Also avoid editing the same entry on two devices while offline; resolve conflicts by checking timestamps, since Diarium supports multiple entries per day and timestamped sections. On shared computers, the password, PIN or biometric lock protects the app, but anyone with access to your cloud account can see the files, so secure that account with two-factor authentication.
For a reader weighing alternatives, Day One uses its own sync service and is Apple-centric, while Joplin syncs through your own storage like Diarium but is a general notes tool rather than a diary. Diarium's distinguishing trade-off is exactly this: you keep control of the data, but you also carry the setup and backup responsibility.
What does Diarium Pro cost and what do I get with a one-time purchase?
Diarium Pro is a one-time purchase per platform, not a subscription. The site does not list a price, so check the store listing for your platform (Microsoft Store, App Store, Google Play) for the current amount.
What the one-time purchase unlocks
- Cloud Sync across devices, using your own storage: OneDrive, Google Drive, iCloud, Dropbox or WebDAV. Sync requires Pro; the free version keeps entries on one device.
- No account or sign-up at any tier — entries stay on your device unless you choose to sync.
- The core journaling toolkit (attachments, tags, maps, calendar, timeline, "On this day") is described as part of the app; the page presents Pro mainly as the sync upgrade, so confirm on the store page whether any other features are gated.
The practical trade-off
Per-platform pricing means a Windows + iPhone + Mac user may pay more than once. If you only write on a single device, the free version may be enough; if you want the same journal on phone and laptop, Pro plus your own cloud account is the reason to buy.
A concrete scenario
A Windows laptop user who journals at home and wants to add phone photos on the go: buy Pro on Windows and on the phone, point sync at OneDrive, and the journal stays in a storage account you already control rather than a vendor's server.
Decision criterion
Buy Pro if cross-device sync through your own cloud matters; stay free if one device and local storage suit you. Compare with Day One if you prefer a managed sync service over bringing your own storage.
How can I attach photos, videos, audio or other files to journal entries and organize them with tags?
Diarium lets you attach photos, videos, audio recordings, PDFs and other file types directly to a journal entry, with no stated limit on the number of attachments per entry. Tags are separate from attachments: you add them to the entry itself, and can use them either as ordinary labels or as trackers for things like mood or weight.
Attaching files
- From within an entry: while writing, add photos, video, audio or any file to that entry. The page describes attachments as unlimited per entry, so a single day's entry can hold a photo set, a voice memo and a PDF together.
- Dictation: if typing is the obstacle, dictation lets you speak an entry instead of writing it, which pairs well with quick audio notes on the phone.
- Rich text: bold, italic, underline, strikethrough, text colour, highlight, bulleted and ordered lists, and links to websites or other entries all sit alongside the attachments in the same entry.
Organizing with tags
- Labels: apply tags freely to group entries by project, trip, person or theme.
- Trackers: reuse a tag to record a value over time — mood, weight or another metric — so the tag becomes a lightweight log rather than just a category.
- Multiple entries per day: if you write several times in a day, timestamps separate them; tags then cut across those entries rather than being tied to one block of time.
Finding things again
Attachments and tags feed the views that make an archive useful: the calendar shows which days you wrote, the timeline scrolls your entries and photos, the gallery collects images, and the map places entries by location. "On this day" notifications resurface older entries, which is where consistent tagging pays off.
A practical setup
Suppose you want to keep a travel log. Create one entry per day, attach the day's photos and a short audio note, tag each entry with the trip name plus a "mood" tag holding a 1–5 value, and add the location so the map view reconstructs the route later. Back home, the gallery shows the images, the timeline shows the sequence, and filtering by the trip tag pulls the whole journey together.
Trade-offs to weigh
- Tags vs. folders: tags are flexible and allow multiple groupings, but they depend on you applying them consistently; a missed tag means an entry drops out of that view.
- Attachments and sync: files make entries larger, and cross-device sync is optional, requires the Pro version, and runs through your own storage — OneDrive, Google Drive, iCloud, Dropbox or WebDAV. If you attach lots of video, check your cloud plan's capacity before relying on sync.
- Privacy: no account is required and entries can stay on the device, protected by password, PIN or biometrics, so local-only use is a genuine option if you would rather not sync at all.
If you are choosing between approaches, start by deciding whether you need the same entry on several devices. If yes, set up sync first and confirm your cloud storage has room for media; if no, keep everything local and use tags purely for retrieval. For a second opinion on general journaling workflows, Diarium itself documents the feature set, and note-taking comparisons are available from Zapier and MakeUseOf.
How can I look back at past entries using the map, calendar, timeline and 'On this day' notifications?
Diarium gives you four separate ways to revisit old entries, and they suit different kinds of recall. Use the map when place matters, the calendar when you want a specific date, the timeline for browsing a stretch of time, and "On this day" for serendipitous rediscovery.
What each view is good for
- Map view: Best for trips, road trips and places you return to. Because entries can carry locations, the map turns your journal into a travel record—useful when you remember where something happened but not the date. A reader planning a holiday recap could open the map, tap a city, and pull up every entry written there.
- Calendar view: The page notes the calendar shows which days you wrote. That makes it the practical choice for checking consistency or filling gaps—for example, confirming whether you logged anything during a busy week—and for jumping straight to a known date like a birthday or anniversary.
- Timeline: A chronological scroll through entries, photos and text. This is the view for reading a period as a narrative, such as reviewing a whole month or a season, rather than hunting for one day.
- "On this day" notifications: These resurface past memories automatically. They work best as a passive habit: you get a nudge, then decide whether to open the entry. A daily journaler will see the most value here; someone who writes sporadically will get fewer matches.
A practical way to choose
| If you want to… | Start with |
|---|---|
| Find everything from one place or trip | Map view |
| Check a specific date or your writing streak | Calendar view |
| Read a month or year in order | Timeline |
| Be reminded of past entries without searching | "On this day" notifications |
A useful next step: if you attach photos, locations and tags consistently, all four views become more effective—map pins depend on locations, and gallery-style browsing depends on attached media. Decide which view matches how you naturally remember things, then make a point of adding that metadata when you write.
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