Both are worth learning . Django is used for making web apps (and web APIs) with python. Kivy is used for making mobile apps with python. Both are typically used for different reasons, you could even use them together (A kivy app with django as a backend).
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It is worth learning . It can help you to create apps more quickly, if your making mobile apps all you need is one code to target all platforms (android and iOS) and if your into android development it is easier than the android studio (I don’t know about iOS and xcode).
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