Why a downside? In two years from now an iPhone 16 PRO in mint condition used will be ½ the current pricing and still work for multiple years.It's not trying to. And it's actually quite good for fleshing out musical ideas. I use Voice Memos all the time for this. The downside is that it seems you need an iPhone 16 Pro for the layering/isolation feature to work.
'You can have everything but not at once' - Oprah Winfrey