NativeProse

NativeProse is a Chrome extension that rewrites English text in place — on whatever page you are already working on. The workflow is three steps: select text, pick a mode from the five available (Native, Academic, Professional, Simplify, Translate), and accept or reject the rewrite. The vendor states it works on Gmail, Google Docs, LinkedIn, and any website, which means the tool follows the writer rather than requiring a separate tab or app. Translation runs in both directions across 20+ languages, with Gemini AI as the named engine underneath.

The differentiating feature is the word-level diff. After every rewrite, a single tap reveals a word-by-word comparison — green for additions, red for removals — then hides it again by default. This is not just cosmetic: it lets a writer learn from what changed rather than blindly accepting output, which matters for ESL learners trying to internalize native phrasing over time rather than permanently outsourcing it.

The tool fits a specific, narrow profile: an individual writer who works in a browser, produces one document or message at a time, and wants rewrites that sound human rather than grammar-checked. It breaks immediately outside that profile. There is no API, so developers cannot call it from their own pipelines. There is no self-hosted option, so teams with data-residency requirements cannot use it at all — the vendor states ‘no data stored,’ but that assurance exists at the vendor’s infrastructure, not the user’s. Free-tier limits mean anyone processing volume will hit a cap and either upgrade to a paid tier or stop.