Loopy Pro: Create music, your way.
What is Loopy Pro? — Loopy Pro is a powerful, flexible, and intuitive live looper, sampler, clip launcher and DAW for iPhone and iPad. At its core, it allows you to record and layer sounds in real-time to create complex musical arrangements. But it doesn’t stop there—Loopy Pro offers advanced tools to customize your workflow, build dynamic performance setups, and create a seamless connection between instruments, effects, and external gear.
Use it for live looping, sequencing, arranging, mixing, and much more. Whether you're a live performer, a producer, or just experimenting with sound, Loopy Pro helps you take control of your creative process.
Download on the App StoreLoopy Pro is your all-in-one musical toolkit. Try it for free today.
2018 iPad & iPhone Microphone Locations & Supported Audio Formats
I went searching for these because something had clogged the mic, but I couldn’t find the location. Found at this link https://support.apple.com/en-us/HT201471 - also, the new 2018 iPad’s have 5 microphones! 
iPad Formats 
iPhone formats 
Comments
Interesting that they don't lists wav or aiff for the iPhone, as I use those almost exclusively on mine.
I would guess Wav and Aiff are probably covered by linear PCM? People usually seem to mean "uncompressed digital audio" by that.
Doh, you're right. They just specifically called out aiff and wav for the iPad and that threw me off.