As a former staff member for a couple bands in SoCal, I just wanted to share Tunable. It's newly released and thought the community might like it.

Tunable is a chromatic tuner, tone/chord generator and metronome for iOS and Android. It features a unique “tuning history” display for visualizing pitch over time. It's great for visualizing pitch steadiness (maintaining breathe support) and vibrato with settings for beginner, intermediate, and advanced players. More features for wind players are also being added.

There's more information in the video below and at the website: http://TunableApp.com

Video: http://www.youtube.com/watch?v=ar243S4NmI4

iOS: https://itunes.apple.com/us/app/tunable-instrument-tuner/id608540795?mt=8
Android: https://play.google.com/store/apps/details?id=com.affinityblue.tunable&hl=en

If any of you like it and would like your school added to our website, let me know.

Here's a few promo codes for iOS to download for free:

4M4FYYHPETFJ
Y9PYWW9664EN
64NLWAHAW69H
J39X6JNHK6HP
344FXXY6WPYP

Open the AppStore "Featured" tab on your device and scroll down to redeem. Press "Redeem" to enter the code.

If you use a code, feel free to post which one you've used so others know it's not available.

I used this app with my private students today. It's a great tool and has a very nice user interface. Because its so packed with features that run at the same time (recorder, tuner and metronome), it eats up battery life pretty quickly. I'm going to continue to use it but will make sure my charging cable is close by. Well done!

...or maybe get something like this.