tunerY is a complete tuner app with metronome and personal amplifier which can be used with your headphones.
You can use this app to tune your guitar, bass, ukulele, banjo, mandolin, violin and any instrument with chromatic tuner with 0.01Hz accuracy.
You can also create your own tuning styles.

Just play the instrument next to your iphone and tune by using built in mic and speaker.
After tuning plug-in your headphone to use acoustic amplifier with many effects in reverb,delay,distortion modules and create your own recordings, and share with friends.

Just pay once for the features like removing ads and time limits.
All in-app purchases run for the LIFETIME.
No SUBSCRIPTIONS with weekly or monthly AUTO-RENEWALS.

Some of the features are
* more than 50 types of guitar tuning(drop, open, etc)
* 9 types of ukulele tuning (including tenor, soprano, baritone, etc.)
* 8 types of bass tuning
* 6 types of banjo tuning
* 7 types of mandolin tuning
* auto and manual string selection
* special acoustic amplifier with common studio effects and recording features
* metronome with grouping of beats