Finding object's function in IDA

Hi guys. I’m having trouble with finding a function of an object I’m really interested debugging. I loaded the application in ida but it cannot find the object or it’s methods (in string or just general search). I tried to find it with frida or cycript, but couldn’t do that, as it’s too complicated for me (I’m a beginner with IOS RE, but I do know re in general).

I though maybe finding the address of the function and then removing the ASLR offset to find it in IDA. I don’t know how to find the function’s address, however.

P.S I’m reversing the health application (built-in with the iphone)