Hi @Diskin,
I looked into this further. It does appear that we had not been sending notifications with sound at the time that you made this request. However, we have since pushed a change that does allow sounds on notifications.
This was exacerbated by Apple's somewhat unclear settings: whether we send the sounds or not, Apple will always give you the settings to turn notification sounds off, even if there is nothing to turn off at the moment.
This should now be resolved, as several users had asked for this feature. Updating past retool version 3.22 should be sufficient. Let me know if you're having any issues with it!
- Adrian