I’ve tried using free online translation apps for novels, and while they can give you a rough idea of the text, they often miss the nuances that make a story special. The translations tend to be literal, stripping away the emotional depth and cultural context. For example, I once used one to read a fan-translated chapter of a light novel, and the phrasing was so awkward it ruined the mood. Character dialogue sounded robotic, and poetic descriptions turned into clunky sentences. If you're just curious about the plot, it might work, but for true enjoyment, nothing beats a human translator who understands the author's voice.
That said, some apps like Google Translate keep improving, and they can be handy for quick checks or untranslated snippets. But for full novels, especially those with complex wordplay or genre-specific slang, you’ll likely end up frustrated. I’d only recommend it as a last resort or for languages with fewer professional translations available.