A free app for iPhone, by Pedro Daniel Macalupu Cumpen.

Acoustic Guitar Tuner Lite is a free and easy-to-use tuner for your iPhone. You can tune your acoustic guitar instantly with precision and ease, within seconds!

It is one of the most accurate tuners, with an A4 calibration, tuning fork and settings.

It also has the fastest loading time and the best performance.

It works with both 64-bit and 32-bit devices.

It is a free and open-source application.

How to use it?

To start, select the sound you want to tune. It can be the default sound (EADB).

Then select the tuning you want to do. It can be either standard (EADB) or acoustic (AEADB).

Finally, the tuning frequency (in Hz).