The Best Cross-Platform Notes App

"Cross-platform" is claimed by nearly every notes app and meant by about half of them.

The claim usually covers three different things: a native app on every platform, a native app on the popular platforms plus a web page for the rest, or a web page everywhere with a wrapper around it. They feel completely different in daily use, particularly offline.

The platform table

Linux is the honest dividing line. It is where the apps that mean it separate from the apps that do not, and the same four names keep appearing: Obsidian, Joplin, Logseq, Standard Notes.

Apple Notes deserves its row explained. On Windows you get a limited view through iCloud for Windows and iCloud.com. There is no Android client and never has been. If any device in your life runs Android, Apple Notes is not a cross-platform option, whatever the marketing implies.

The recommendations

Best overall: Obsidian. Native everywhere including Linux, notes stored as plain Markdown files in a folder you control, and it works offline by default because it is a local app rather than a client for a service. Sync is a paid add-on or your own arrangement with iCloud, Syncthing or a git repository. That last point is either the main advantage or the main irritation, depending on your tolerance.

Best free with real sync included: Joplin. Everything Obsidian covers plus a terminal client, with end-to-end encrypted sync to Dropbox, OneDrive, Nextcloud, WebDAV or S3 at no cost. The interface feels a decade old. It is otherwise the most complete free answer here. See the best open source notes app.

Best for people who do not want to configure anything: OneNote. Free, sync just works through OneDrive, native on everything except Linux, and unusually good at handwriting for a cross-platform app. The structure is rigid and the mobile apps are heavy.

Best for privacy across platforms: Standard Notes or Notesnook. Both are end-to-end encrypted, both run everywhere including Linux and the web. Standard Notes has the longer track record; Notesnook has the better mobile apps. See the best private notes app.

Best for simple and fast: Simplenote. Plain text, instant sync, free, on every platform. It does almost nothing else, which is the entire pitch. See the best simple notes app.

What actually matters more than the platform list

Three things decide whether a cross-platform setup works, and none of them appear in a feature comparison.

Whether it works offline. A web app in a wrapper is unusable on a plane or a bad train connection, and this is where most "available on Linux" claims quietly mean a browser tab. Test it by turning off wifi and trying to write.

Whether sync conflicts are handled visibly. Every multi-device system produces conflicts eventually. The good apps show you both versions. The bad ones pick one silently, and you find out months later that a paragraph is missing. Test it deliberately: edit the same note on two devices while one is offline, then reconnect. What happens next tells you more than any review. See syncing notes across devices.

Whether capture is fast on the phone. Desktop apps get the attention, and the phone is where most notes are actually caught. If capture takes more than a couple of seconds, the note does not get written, and the platform matrix is irrelevant. See the capture habit.

There is a fourth, less obvious one. File format beats platform count. An app on five platforms storing notes in a proprietary database is more fragile than an app on three storing Markdown in a normal folder, because the files outlive the app. This is the argument in plain text notes, and it is why Obsidian and Joplin keep winning these lists despite neither being the most polished option.

The trap

The most common mistake is optimising for a platform you use once a month.

If you spend ninety percent of your time on two devices, pick the app that is excellent on those two and acceptable on the rest, rather than the one that is mediocre everywhere in the name of uniformity. Bear is a better daily experience than Joplin for someone who is Apple-only, and no amount of Linux support changes that.

Count where the notes are actually written, not where they might be.

About us

Clair Mind is iPhone-first, with a web app for the desktop. There is no Android client today, so if you carry an Android phone, one of the apps above is the right answer and we would rather say so than pretend otherwise.

More in the best notes app for Mac, the best notes app for Windows, the best notes app for Linux, and the best notes app for Android.