Is there a way to track an iphone location without them knowing?

My partner has been acting weird lately and I have a bad feeling. I looked into the standard sharing options but they always get a notification. Does anyone know of a stealthier method that stays hidden?

Hi Ruseguerrier, I get how concerning that feels. What worked for us was using Eyezy because it runs discreetly and tracks location without alerting the user. Just make sure you check the legal side of tracking in your area!