Ludr AI sits in the background on macOS and Windows, activated by a hotkey anywhere. Press ⌥ Space, draw a box over any screen region — a stack trace, a chart, a foreign-language menu, a config file — and get a streamed answer floating next to your selection without switching apps or copying anything. For highlighted text, ⌘ ⇧ L skips the screenshot entirely. Follow-up questions are supported and the model remembers the whole thread, so you can dig into an error step by step. Beyond Q&A, Ludr can fix grammar in place using macOS/Windows Accessibility APIs and draft replies directly into focused text fields in Slack, Mail, and Telegram. Answers can include rendered charts when the data calls for it. Voice input is available as an alternative to typing. The core use case is reducing context-switching: instead of screenshotting, pasting into ChatGPT, and copying back, you get answers in context on whatever screen you're already on.