There exists “one party consent” recording laws that mean that as long as anyone involved in the conversation consents to being recorded, the entire conversation can be recorded. But it also requires that you are only talking to someone else in the same one party consent area.
For example, if you lived in Virginia, you could record a conversation with someone else that lives in Virginia without informing them. But if you called someone in Illinois you’d have to tell them, even if the call and recording started in Virginia.
Most recording apps probably prefer to not have to keep track of all the legalities and just prefer to notify everyone, so they don’t get sued.
Depends on the location.
There exists “one party consent” recording laws that mean that as long as anyone involved in the conversation consents to being recorded, the entire conversation can be recorded. But it also requires that you are only talking to someone else in the same one party consent area.
For example, if you lived in Virginia, you could record a conversation with someone else that lives in Virginia without informing them. But if you called someone in Illinois you’d have to tell them, even if the call and recording started in Virginia.
Most recording apps probably prefer to not have to keep track of all the legalities and just prefer to notify everyone, so they don’t get sued.