You will probably get some good use out of Apollo Remote Recorder, if you’re looking for another great one you can use for free. It also has some sister apps (Sound Injector, and maybe one or two others?) that are also pretty neat, and it’s legit free, not just trial and then IAP. They allow you to integrate multiple iOS, PC and/or hardware devices into your workflow together and record it all in a DAW on your computer without a big hassle. Near as I can tell, they are letting you have the iOS apps for free with the hope in mind that you will want to integrate another piece of Mac or Win10dows software that will cost money, but I haven’t investigated too deeply. I’m just enjoying the feature rich experience and inter-app connectivity through AudioBus (which is another must have for anyone trying to do more than doodle and scribble with sounds on their iPad). I hope this helps!