Only selected text is sent
The app sends the text you explicitly select only to the provider endpoint you configure.
Native macOS writing assistant
Privacy-first, open-source English rewriting.
Rewritr helps non-native English speakers turn selected text into smoother, more natural, native-like English, right where they write.
No hosted Rewritr account. No rewrite history. No analytics. Bring your own OpenAI-compatible provider, or point it at a local model.
Rewritr comes from Rewriter. The missing letter e keeps the name small, light, and a little playful, just like the app itself.
Selected text
I want make this sentence more natural for daily work.
I want to make this sentence sound more natural for everyday work.
Privacy first
Your text stays under your control.
Rewritr is intentionally small. It does not run a backend, collect analytics, store rewrite history, or ask you to create an account.
You choose the provider
Use an OpenAI-compatible cloud endpoint, or use a local model when you want data to stay inside your own machine or network.
API keys stay on your Mac
Provider keys are stored in Keychain. Non-sensitive settings stay in local app preferences.
Inspect what it does
Rewritr is free and open source, so the trust model is visible instead of hidden behind a hosted writing service.
Purpose
Better everyday English, not a new writing platform.
Rewritr is for people who already know what they want to say, but want the final English to feel smoother and more natural.
It is not trying to be a document editor, AI content generator, academic writing suite, browser extension, or subscription writing account.
Select text
Highlight the sentence or paragraph you want to improve in the app you are already using.
Trigger Rewritr
Use the global shortcut from the macOS menu bar app. Rewritr copies the selection through normal macOS automation.
Preview or replace
Review the rewrite first, or use instant replacement when you want the fastest flow.
Different by design
A narrower tool with fewer hidden tradeoffs.
Not browser-bound
Works across normal macOS apps and browser text fields that support standard copy and paste.
Not account-centric
No Rewritr login, hosted workspace, usage dashboard, or server-side rewrite history.
Not a paywalled AI suite
The app focuses on one job: rewrite selected English naturally using a provider you control.
Not over-formal
The default rewrite aims for clear, native-like everyday English, not academic or thesis-style prose.
Screenshots
Setup should feel understandable, not mysterious.
Provider and behavior
You decide where rewriting happens.
Configure a full OpenAI-compatible endpoint, model, optional API key, rewrite mode, and shortcut in one place.
Compatibility
Works best with normal editable text.
Rewritr works best in apps and browser fields that support standard selection, ⌘-C, and ⌘-V.
Secure fields, terminals, remote desktops, virtual machines, browser-based IDEs, and apps with unusual focus handling may be limited.
Free and open source