I’m wondering if anyone knows of a way, or an app, that allows me to record calls. In my country, it is legal to record calls with single party consent (ie, only I have to consent). My job requires me to make phone calls, and it is important that what is said in the call can be verified at a later date if it is ever challenged.
I personally haven't come across one, but in a pinch you can just use speakerphone mode and place it next to another recording device (like a laptop running Audacity or a fork like Tenacity, which are at least FOSS).