ProWritingAid

ProWritingAid's basic grammar and spelling checks usually don't trigger AI detectors, but using generative features like 'Rephrase' or 'Sparks' can lead to your work being flagged. Some strict detection tools may also flag non-generative edits if the writing becomes too polished or follows robotic patterns.

Whether ProWritingAid is better depends on your needs, as it provides much deeper structural analysis and detailed style reports for long-form creative writing. Conversely, Grammarly is often favored for quick daily editing and its ease of use across various websites and applications.

ProWritingAid offers a free version that includes basic grammar, spelling, and punctuation checks, though it is limited to 500 words at a time. For unlimited word counts and advanced reporting features, you would need to upgrade to a paid Premium subscription.

ProWritingAid can be overwhelming for new users due to its complex interface and steep learning curve. It also lacks a dedicated mobile app or keyboard and may experience performance slowdowns when processing very long documents.