intuitive
US /ɪnˈtuː.ɪ.t̬ɪv/
UK /ɪnˈtuː.ɪ.t̬ɪv/

1.
using or based on what one feels to be true even without conscious reasoning; instinctive.
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She had an intuitive understanding of the child's needs.
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His response was purely intuitive, not based on logic.
2.
(of an electronic device or software) easy to use and understand.
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The new smartphone has a very intuitive interface.
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The software is designed to be highly intuitive for beginners.