RewriteBar offers a free trial before you buy. It sits in your Mac's menubar—lets you fix writing without switching apps. That's what they promise.
Grammar correction works everywhere you type. Email clients, Slack, note apps, all covered. It understands context better than basic spellcheck does. Translation handles 500+ languages (dialect variations included). Convert UK English to US English. Or translate into Yoda-style if that's your preference. Custom actions let you chain multiple transformations into workflows.
Side-by-side comparison displays original and rewritten text—line by line or word by word. Keyboard shortcuts trigger actions fast. Content marketers jumping between tools all day might save real time here. Pre-built workflows handle specific tasks: removing AI dashes, fixing JSON errors, creating ASCII art, writing TL;DR summaries, converting formal text to conversational tone.
It works with local AI models through Ollama, LM Studio, Apple Intelligence, or Osaurus. Offline use is possible. The prompt injection guard adds input-safety and instruction-isolation rules—blocks certain security risks. PopClip integration exists if you're using that.
The 20MB footprint won't slow your system down. Requires macOS 13.0 or later though. Intel and Apple Silicon both supported. Not on Mac or running older OS? You can't use it. How this stacks up against Grammarly or LanguageTool depends on one thing: how much you value staying in one workspace versus switching to browser extensions.
