TheChord guitar app is available in both audio and visual.
!!!!You can use it for free.
+++How to use+++
Key
x = dont play string
o = play open string
If the same fingering appears for more than one string, place the finger flat on the fingerboard as a bar, so all the strings can sound.
Touch the straight touch. The chord image will have a guitar and note.
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The app is easy to use.