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.
iPad Oscilloscope Apps
Does anyone have a recommendation for an iPad Oscilloscope/Spectrum-Analyser app that can monitor signals from an audio interface, and has decent controls, particularly trigger and hold etc...
I see a bunch of apps on the store, but as usual it's unclear which ones are worth a punt. 
Comments
Soundbeam is free I believe. So I'd give that a try.
Also looking for a good simple clean looking oscilloscope so interested in what others recommend.
MC Oscilloscope is pretty good. I got it as part of the MC Studio bundle ($15) but you can get it separately for $5.
This has bunches of useful stuff including your audio needs, is universal, and is free of charge with 1 IAP to pro upgrade:
Electronics Engineering ToolKit by Thomas Gruber
https://appsto.re/gb/HFKwx.i
Thanks peeps, I shall try those.
Onyx Labs Oscilloscope is the best one I have found, but like most does not support AudioBus. I asked the dev and he could not understand why I would want that. He also has a very good Analyzer App, same comstraints.
Oscilloscope by ONYX Apps
https://appsto.re/us/ecIkx.i