Standard Notes is a simple and private notes app. It allows you to write and sync your notes across all your devices, including your iPhone, iPad, Mac, and web browser. Private means your notes are end-to-end encrypted, so only you can read your notes. Even we can't read the contents of your notes. Simple means it does one job and does it well. Standard Notes is a safe and lasting place for your life's work.
- Does not support images or attachments, only text.
- Standard Notes is a multiplatform application (Windows, Android, Linux), secure with perfect synchronization on several devices. Only problem: it is not multilingual.
- Best option for plain-text synced notes I've found. Moved to this from Simplenote due to sync problems there. UI is not the prettiest but I like the visibility into what's happening with sync and the option to choose different editors for notes. Sync protocol is well documented and you can even run your own Standard File server if you really want. Developer is active and responsive, and has the right approach (IMHO).