Three-finger AI Context Lookup

Point at a word, use a gesture, and get AI's explanation of it in context

Problem

When reading English papers, web pages, or games, selection-based translators require selecting text first and often show a floating bubble that pops up accidentally. They usually give a full-sentence translation when the user really wants "what does this word mean here?" Screenshot translators need hotkeys and box selection, interrupting the reading flow.

Solution

A desktop tool: hover the mouse over an unfamiliar word, then triple-tap the trackpad (Mac) or double-tap Ctrl (Windows) to show a panel next to the word with an AI explanation tailored to the current sentence, plus a local MDict dictionary entry. No floating window unless summoned.

Users

Students, researchers, programmers, and gamers who frequently read English materials.

MVP

Trigger via triple-tap on macOS and double Ctrl on Windows; capture the word and its sentence near the cursor; call an LLM for a context-aware explanation; integrate local MDict dictionaries; position the panel next to the word with minimal UI.

Revenue

One-time purchase or annual subscription, e.g. $9.99 one-time; offer a free version with your own API key and a paid version with hosted AI.

Why now

LLMs now understand context well, and local dictionaries plus cross-platform desktop frameworks like Tauri let indie developers build a polished niche tool without competing head-on with general translation giants.