Guitar TunaPro-Chords,Tuner

We support the following instruments: guitar (5 strings, 6 strings, 7 strings, 12 strings), bass (4 strings, 5 strings), euclid, violin, mandolin, baleka, banjo (4 strings, 5 strings), erhu, guzheng


We have adopted A4=440hz, which is tuned in D by default. If you need to debug the instrument in another key, please look forward to our subsequent version.


We have adopted professional background noise reduction and filtering technology, but for the accuracy of tuning, we still recommend that you tune in a quiet environment as much as possible, and keep the phone microphone as close to the string as possible (the microphone is located at the bottom of the iPhone)


If this is your first tuning, please do it with the help of professional guitarists, teachers or professionals to avoid the danger of broken strings.

About subscriptions:
·In the free mode, you can debug 3 tones for each musical instrument, and the excess part requires you to become a subscription member. After becoming a member, you will also be exempted from advertising interference.
·The subscription fee will be deducted from the iTunes account when the user confirms the purchase. The subscription supports automatic renewal. You can turn off automatic renewal 24 hours before the end of the current cycle (Settings - Account - Subscription - Select this product)
·In addition, users who subscribe to the quarterly package for the first time will get a 3-day free trial experience. If you are not satisfied with the features or do not need to use them for a long time, you can cancel the subscription during the free trial period without any deduction


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contact us: tuningmachine@126.com