v1.0.1

Fixed

• Microphone could fail to start right after granting access on first launch
  ("Couldn't use the microphone"). Capture now starts reliably, retries brief
  transient failures, and recovers on its own after interruptions (calls, Siri)
  and audio-route changes instead of getting stuck on the error screen.
• Tuning no longer goes silently dead after a phone call, Siri, or unplugging
  headphones — it resumes automatically, or shows a clear "Try again".
• The tuner now prefers the built-in microphone over a connected Bluetooth
  headset, avoiding the degraded pitch readings a low-bandwidth headset mic gave.

Changed

• Other apps' music or podcasts now resume after you leave Tone.