I'm not a mobile dev, but I'm thinks it's difficult to have a great native crossplatform application at first draft.
Maybe you can start with a single-platform app, publish it, and then rewriting as a crossplatform. Or with a PWA or with Ionic who looks easier to learn when you know HTML/CSS.
Flutter look more object-oriented than React Native. Maybe, as a Python dev it's easier. However, with React, you can learn functional programming and I think it can improve the way you develop.
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I'm not a mobile dev, but I'm thinks it's difficult to have a great native crossplatform application at first draft.
Maybe you can start with a single-platform app, publish it, and then rewriting as a crossplatform. Or with a PWA or with Ionic who looks easier to learn when you know HTML/CSS.
Flutter look more object-oriented than React Native. Maybe, as a Python dev it's easier. However, with React, you can learn functional programming and I think it can improve the way you develop.