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About the application:

A4tune is an extremely accurate tuner for guitars and violins. Specialists appreciate its precision, beginners quickly learn to tune instruments properly. The apk is simple to use thanks to a combination of chromatic and strobe tuners on one screen, and provides the most accurate tuning you can achieve. The chromatic and strobe tuners are independent, but both use the same input from the built-in microphone of your smartphone or smartphone for their advanced algorithms. Chromatic tuner The chromatic tuner precisely detects of the frequency of the tone played on your guitar or violin, and shows it on the chromatic scale. The target strings are highlighted on the scale, and you can see how far is the tone from being in tune. When you receive close enough, you can use the strobe tuner for ok tuning. Strobe tuner After you have used the chromatic tuner to receive close enough to the target frequency, you can begin looking at the strobe tuner. When the pattern is moving to the right, it means the tone is too high, and you need to tune down. When it is moving to the left, just tune up. The slower the pattern moves, the better is your instrument tuned. If you are in doubt how to use the tuner, please read the built-in assist, and see the examples of the tuning process there. The strobe tuner uses an independent algorithm from the chromatic tuner. While the chromatic tuner uses the Quick Fourier Transformation, the algorithm in the strobe tuner is much closer to what you can search in oscilloscopes, and is computed directly on the GPU of your smartphone / tablet. Tuning by ear You can also play the reference tones using the "Play Tone" buttons at the bottom of the screen. The tone is synthesized, and respects the setting of the concert pitch. Guitar The tuner has been inspected with a lot of guitars and violins, and we constantly grow our try coverage with fresh recordings of the instruments. You can switch between the guitar and violin tuning in the settings. Violin The strobe view allows you to tune as precisely as the professional violinists tune by ear. The chromatic view helps the novice users to improve their accuracy when exercising. Other instruments The chromatic tuner can be used with another instruments too, but you will have to ignore the strobe view. We also limit the range of the frequencies to what is usual on a guitar or on a violin. We will add more instruments later, when we grow our try suite with their recordings. Features: * Guitar tuner beginner & pro * Violin precision tuner * Advanced noise cancellation - works even with a metronome on * The most favorite alternate guitar tunings * Simple to use for violin and guitar beginners * Precision tuner suitable for specialists * Plays reference tones * First-start guide to understand the usage * Built-in assist to understand the apk better * Two independent tuning algorithms: chromatic tuner using the fourier transformation and strobe tuner emulating the stroboscopic result * Fast, precise, and accurate tuner * Gratis, Ad-free * Chance to donate for further development * Concert pitch frequency setting * Note naming: English, European, Solmization * Equal temperament * Fast access to settings to switch between violin and guitar tuning * Send feedback: Record the string, e-mail it directly from the application, and we will add it to our built-in tests. * Inspected with a lot of instruments, and try guitar / violin recordings are in a try suite that is regularly run before every release. A4tune is ideal for all violins and guitars, and you'll really have fun the sound of your instrument, and the melody you play!