I am currently using Obsidian and the Remotely-save plugin. However, I have a big problem with Remotely-save. - Background synchronization is not possible in Android. The app must remain open until synchronization is complete. - Unreliable. Errors such as “Faild to fetch” and “error while sync” are displayed and need to be reset periodically. - End-to-end encryption must be available. - I am poor (monthly income is less than 500 USD), so it must be available for free. Given the technical limitations of the Obsidian plugin, I am guessing that I would need to have a file system level synchronization method rather than a plugin to achieve background synchronization. In addition to this, I have used Joplin, which also has the problem of no background sync for Android. Also, Joplin's desktop app is excellent, but the Android app is poor and impractical. I have also used Standard Notes, but it does not seem to be able to display dates in yyyy-MM-dd.