A.K.A u/hucifer
FYI that’s not a spectrogram, that’s a waveform analyzer. It might help you in your search to know that.
Unfortunately, I don’t know of any FOSS apps for Android that offer this feature.
I have no idea 🤷♂️
It installed just fine on my OnePlus 6 and Samsung S21.
Photopea, Gimp, and Krita are great desktop alternatives but they’re hardly mobile-friendly.
Infinite Painter is the closest to Photoshop that is an actual native mobile app, in my experience.
FYI that’s not a spectrogram, that’s a waveform analyzer. It might help you in your search to know that.
Unfortunately, I don’t know of any FOSS apps for Android that offer this feature.