Framework and security updates.

This version includes security and framework updates.

• Improvements to the tuning algorithm
• User interface improvements
• Support for additional languages

Fixed an issue with the tone generator.

This update contains minor stability and performance improvements.

Fixed a bug that caused a crash in iOS 9 devices.

Fixed a bug that caused issues with the app's normal functioning when used with Bluetooth devices.

- Minor improvements in the user interface.
- Added support for dark mode.

Minor performance improvements.

Improvements in the tuning algorithm - Now you can tune instruments with even lower frequencies than the human audible range.