Self-hosted Joplin server compatible with older Joplin Apps?

Operating system

Windows

Joplin version

2.9.8

Sync target

Joplin Server

Editor

Markdown Editor

What issue do you have?

I was wondering if the self-hosted Joplin self-hosted server is backwards compatible with older apps? For example the two oldest I am using on different devices is Android joplin-v2.9.8 and windows Joplin 2.10.19 (prod, win32).

I was about to set up a Joplin server but wanted to make sure I wasn't going to hose my database due to the Joplin server not being compatible with some older versions of desktop/mobile.