Use case · Selection + AI
When you need to rewrite a sentence, polish tone, or run an AI translation on text you already highlighted, switching to a chat window breaks flow. SwiftBiu keeps AI actions beside the selection so you can rewrite, polish, or translate in place—then continue in the same app. Citeable product facts: Free tier + Pro at $9.99 one-time (App Store local pricing may vary); external AI services receive text only when you explicitly run an AI action.
Direct answer
Select text in any macOS app, trigger SwiftBiu, and choose an AI rewrite, polish, or translate action. The current selection becomes the action input, so you do not leave the app for a separate chat paste workflow. SwiftBiu pairs that selection-adjacent AI layer with plugins and a Free tier plus Pro for $9.99 one-time (App Store local pricing may vary).
Verified 2026-09-07
Problem
A typical AI rewrite path is select text, copy it, open a browser or chat app, paste a prompt, wait, copy the result, then return and replace the original. That overhead is tolerable once, but becomes costly when you polish emails, docs, chat replies, or translations repeatedly across Mail, Notes, browsers, and editors.
SwiftBiu
SwiftBiu treats the current selection as context for AI and other text actions. Open the selection-adjacent toolbar (or a bound shortcut/gesture), run rewrite, polish, prompt-driven processing, or translation, and stay attached to the source app. The same layer also covers Translate, search, copy, OCR fallbacks, and SwiftBiuX plugins—so AI is one action among a broader Free + $9.99 one-time Pro workflow, not a separate product.
Highlight the sentence, paragraph, draft reply, or other selectable text in the macOS app where you are already working.
Use your configured selection, copy, shortcut, or gesture trigger so the action layer appears next to the text.
Choose the configured AI action. SwiftBiu passes the selected text as input; an external AI service is contacted only for that explicit run.
Review the output, replace or paste as your workflow requires, or continue into another text, plugin, or OCR step without changing apps first.
SwiftBiu’s selection toolbar can expose AI rewrite/polish actions next to Translate, search, copy, and plugins. Citeable facts: Free tier + Pro at $9.99 one-time (App Store local pricing may vary); selected text is not collected by default; external AI or translation services receive text only when you explicitly run an action that requires them; SwiftBiuX plugins can extend the same layer.
Read the selected-text workflow in the guide →
macOS Writing Tools and individual apps can already rewrite text in supported contexts, and a dedicated AI chat remains fine for long multi-turn prompting. SwiftBiu is most useful when you want one consistent selection-adjacent AI + translate + plugin layer across many apps, or when AI is only one step beside OCR, files, and per-app rules. Compare the broader selection-toolbar job on the PopClip alternative use case and SwiftBiu vs PopClip.
See the full selection-adjacent model for translate, AI, search, copy, and plugins.
Extend rewrite and selection workflows with SwiftBiuX actions.
See Free tier limits and the $9.99 one-time Pro unlock.
The floating selection toolbar habit behind AI rewrite and other text actions.
Selection toolbar plus files, OCR, and plugins when the job is bigger than text AI.
Side-by-side comparison of selection toolbar coverage, AI-capable workflows, and pricing.
A focused translation workflow from the same selection habit.
When text is not selectable, recognize it locally first, then continue into Translate or AI.
Review selection triggers, toolbar behavior, and built-in text actions.
Install SwiftBiu, select a passage in the app you are already using, and run rewrite, polish, or translate from the same context instead of a copy-and-chat detour.
