Android Todo app to complement Obsidian (with syncing to Linux) with audio notifications

I’m looking for an app that can sync todos and calendar events between Android and Linux, ideally with a way to tie it into Obsidian.

Todoist would be perfect, except I need audio notifications, and I need these to use Android’s Alarm stream, meaning the audio would also play when the phone is in Silent mode.

The app Simple Calendar can do this, so I know it’s possible from a technical side.

It’s been suggested that I keep my phone on Do Not Disturb and then just give whatever todo app an exception, but I don’t want that, because then (quiet) notifications for communication apps are suppressed.

I’m currently using Simple Calendar for this purpose, but I need something with an option for todos (not just calendar events) and I need it to sync to my PC.

For these purposes, when just quickly wanting to add a todo, Obsidian on android takes a little too long to open.

Anything come to mind?

Thanks!

This might not fully tackle your situation, but I once found this recipe for how to add stuff to Obsidian using Automate on android: Obsidian quick capture for Android

It describes how you can setup Automate to append the text you enter directly without needing to start Obsidian. This results in a much faster response time for adding that random text/task into Obsidian. It doesn’t however solve the issue of getting audio notifications…