I have the Apogee Jam 96 and it works great with GarageBand. Super portable.
The iRig HD 2 has an actual output, costs less, works really well with all the lightning iPhones and Mac (i have two MacBooks and can even confirm it works on the new 2016 with a USBC adapter ;-)) and comes with a full Amplitube 4 license (obviously works well with it). Extremely happy with it.
Apogee Jam has no output port (incompatible with new iPhone) and is a bit overpriced for what it is. People need to stop recommending it as a first choice just because they have one, IMHO.
The iRig HD 2 has an actual output, costs less, works really well with all the lightning iPhones and Mac (i have two MacBooks and can even confirm it works on the new 2016 with a USBC adapter ;-)) and comes with a full Amplitube 4 license (obviously works well with it). Extremely happy with it.
The biggest fallacy newbies assume is that their Windows Laptop speakers will be an available Audio Output option for monitoring low latency real time guitar processing with a quality 24 bit ASIO Audio interface.
Owing to the ASIO spec, for lowest latency you will use the audio output on the ASIO Audio interface