This update from Apple will improve the functionality of this app. No new features are included.

Minor bug fixes and stability enhancements.

Updated to better support newer iOS releases.

This update from Apple will improve the functionality of this app. No new features are included.

Minor bug fixes.

Updated for iOS 11

Bug fixes.

If you find this guitar tuner app useful, please consider leaving a positive review and rating in the App Store.  It really helps!

Fixed a bug with the selection of alternate guitar tunings.

If you tune your guitar using this app, please consider leaving a rating and a nice review.  It really helps.

Bug fixes for iOS 9 and new iPhone 6s sample rates.

Improved multi-strobe animation.
Bug fixes for newer (64-bit) iOS devices.

Bug fix for broken tuning selection.

Bug fix for alternate tuning selection.

Enhanced for new iOS devices.

Added Bass Guitar or String Bass tuning selection.

Bug fixes for even better tuning accuracy.

Bug fix for a potential app freeze-up.

Added a new 6 string simultaneous multiple strobe mode, more responsive and more noise resistant.  Just hit the mode button to switch between the familiar app look and the new one.
Also added the capability to configure A=415Hz for old and historic tunings.
Thanks for supporting the development of HotPaw's inTuna Strobe Tuners with your positive reviews and ratings!

Important bug fix for app stability.
Also in Versions 2.4.x : Improved strobe responsiveness and accuracy under iOS 4 and on the iPhone 3G.

Bug fixes for audio level.

Improved strobe rendering on all devices, including iPhone 3G.

bug fix for strobe on iPhone 3G

iOS 4.0 compatibility fixes

Added a Low-C alternate tuning.
Minor bug fixes.

OS 3.0 compatibility enhancements

Improved smoother strobe animation.
Fixed blinking strobe problem on 1st generation iPhones.
Added 20 minute idle timeout to limit battery drain.