intuitiv
intuitive
Based on intuition; understood through an immediate feeling or inspiration, without conscious thought.
Sie traf die richtige Entscheidung ganz intuitiv.
She made the right decision completely intuitively.

intuitive
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intuitive
Based on intuition; understood through an immediate feeling or inspiration, without conscious thought.
Sie traf die richtige Entscheidung ganz intuitiv.
She made the right decision completely intuitively.

The adjective 'intuitiv' (intuitive) belongs to the noun 'die Intuition' (intuition). If you know the noun, you can easily work out the meaning of the adjective: something that is based on intuition.
Er hat ein intuitives Verständnis für komplexe Probleme.
He has an intuitive understanding of complex problems.
'Intuitiv' (intuitively) is very often used as an adverb to describe how an action is carried out. It then stands directly with the verb.
Sie hat intuitiv die richtige Antwort gewusst.
She intuitively knew the right answer.
In connection with technology, software, or devices, 'intuitiv' (intuitive) almost always means 'benutzerfreundlich' (user-friendly) or 'leicht verständlich' (easy to understand). If you read words like 'App', 'Software', or 'Bedienung' (operation/use), this is the intended meaning.
Das Menü des neuen Handys ist sehr intuitiv aufgebaut.
The menu of the new phone is structured very intuitively.
In the psychological meaning, 'intuitiv' (intuitive/intuitively) is often connected with perceptions and decisions. Typical verbs are 'etwas intuitiv erfassen' (to grasp something intuitively), 'spüren' (to sense/feel), or 'wissen' (to know).
Manchmal muss man eine Entscheidung einfach intuitiv treffen.
Sometimes you simply have to make a decision intuitively.
simple / just
'einfach' and 'intuitiv' can both mean that something is easy to use or understand. 'einfach' is more general: a task, an explanation, or the operation of something is not complicated. 'intuitiv' is especially suitable for software, devices, or user interfaces. It means that you understand almost by yourself what you need to do, even without instructions. The words can be confused because an intuitive program is often also easy. But not everything simple is intuitive: a math problem can be easy, but you would not normally call it intuitive.

Die neue App ist intuitiv, deshalb findet der Gast die Buchung ohne Hilfe.
The new app is intuitive, so the guest can find the booking option without help.
Die Erklärung war so einfach, dass alle sie sofort verstanden haben.
The explanation was so simple that everyone understood it right away.