When comparing Apple Notes vs TagSpaces, the Slant community recommends Apple Notes for most people. In the question“What is the best cross-platform note-taking app?” Apple Notes is ranked 18th while TagSpaces is ranked 46th. The most important reason people chose Apple Notes is:
It syncs with iCloud, and surprisingly, also with Gmail and possibly other services too.
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Pros
Pro Sync with other Apple devices via iCloud, other cloud/email services
It syncs with iCloud, and surprisingly, also with Gmail and possibly other services too.
Pro Built-in
It's a default system app, making it easy to find and use since it is already installed.
Pro Rich-text editing
Allows for simple text formatting and making TODO lists with checkboxes.
Pro Attachments
You can add files to notes and then filter notes by attachment types.
Pro Supports sharing
Pro It's fast, and syncing is very dependable
The app launches quickly on both Mac and iOS, it also syncs quickly (in seconds) and very dependably across different Apple devices.
Pro It remains simple to use with a gentle learning curve
Despite the significant new updates in iOS 9 and iOS 10, you can start using Notes immediately, then try/master new features with ease — definitely a gentle learning curve.
Pro Open source
TagSpaces is free and open source making it easily extendable with the help of extensions.
Pro Your can choose your cloud file storage
Using only files and no databases let's you make the decision with which cloud file sync service to use, making sure your notes are made available on other devices and platforms. It works great with Owncloud, Nextcloud, Dropbox or Google Drive.
Pro No web service or database lock in
The backend is simply the directory and file structure on your harddrive.
Pro No cloud
TagSpaces is running completely offline, sending no data to any cloud based service, unlike many Evernote alternatives.
Cons
Con Cannot export to a format that can be imported again
This makes it obscure and cumbersome to back up your notes as files that could be managed by your backup system. You can export to PDF, but not in bulk; and this isn't the native format that you can easily recover with.
Apple compounds the problem by using some undocumented format for notes. You can, however, back them all up by backing up the files found in ~/Library/Containers/com.apple.Notes/Data/Library/Notes
Con It renames your files in order to tag them
The positive side of this drawback is that this way the tags are easily transferred to other platforms by simply syncing them.