It’s not specific to Model:Samples but I think WavePad will be useful as a general Android phone based “field recorder” that incorporates basic editing and some effects without adverts for $.99. The full version is $10 but I’ll stick with the basic version until I’ve used it a bit.
I particularly like that I can email the file directly from the app.
Are there any Android apps that can directly transfer files to the Model:Samples from my phone via the USB ports?