I find it difficult to believe that the â€œMinor fixesâ€ listed in the upgrade notes would change the minimum specs required to run the app.
Considering I have seen this in at least two other ios apps:
MIDI Designer Pro
I recall the developer of MDP mentioned there was a problem during build from XCode, could this be the case with n-track also?
thanks for contacting us.
The issue seems to be related to a bug of the Apple Store or a problem during the build from xCode as you mentioned.
I will start to investigate to restore the app availability as soon as possibile.
Thanks for your support,
I have figured out the issue.
The next update should resolve the problem.
Thanks for your report.