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String Tuner is the first chromatic tuner that especially designed and optimized for string instruments as: Violin, Viola, Cello and Double bass. Reference sound/Tone generator is provided to help you tune by ear. Moreover, with the optimized algorithms up to ±0.1cent precise , it helps you to do fine tuning quickly with the Built-in or external microphone on your iOS Devices.

Most chromatic tuner used 12TET(twelve-tone equal temperament), but the string instruments as violin usually tune as PERFECT FIFTHS against each string. That's why the default temperament of String Tuner is setted to Pythagorean Tuning. You can still customize to 12TET or Standard Just Intonation when needed.

String Tuner also supports adjustable calibration A4, you can either adjust it manually or using auto-detecting, it is really helpful when your string instrument need to tune based on Piano's pitch(for example). Hit the A4 key of the piano and String Tuner will take care of the rest.

=== FEATURES ===
* User-friendly, extremely easy to use.
* Universal APP, purchase once, available on all of your iPhone/iPod/iPad.
* 30 cent range fine tuning display
* Precise up to ±1/1000 semitone (±0.1 cent)
* 3 Temperaments provided: 12TET, Pure(Standard Just Intonation) and Pythagorean Tuning.
* Adjustable A4 calibration up to 0.1 Hz precise with the range 400-480Hz
* Tone generator helps to do coarse tuning or practice tuning by ear (Intonation Practice).
* 4 Tones are supported: Sine, Square, Triangle waveform and REAL String Sound.
* Support and optimized for Violin, Viola, Cello and Contra Bass
* Tuning Range from A0 - C8 (Full Range)


===About EUMLab=== 
EUMLab's goal is to unleash your music talent ! With magic technology, EUMLab provides many products to help you create or learn music. 

More about us on www.eumlab.com 
Follow us on Twitter/Facebook @EUMLab 
Questions? Write to us: feedback@eumlab.com 
Watch videos on bit.ly/eumvideo
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Our customers said:

"SO great, way better than that 20$ tuner I bought at the music store that did not even work that well."

"It just works! By FAR the best String Tuner on the App Store! Great UI, just great everything!"

"By far, one of the easiest to use tuning apps. The support of the whole family of string instruments in one app is very much appreciated and makes this app that much more useful for orchestra players"

"just perfect!! easy, simple and clean!"

"I used this app for the first time to tune a children's string ensemble. 4 violins, 2 violas and 2 celli tuned and ready to play in under 5 minutes!!! I could not believe how wonderfully in tune they sounded! Totally recommend it especially if you have lots of strings to tune and very little time."

and more…
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Thanks, everyone. We will keep making the best music APPs for you.