HotLingo is a native menu bar app (macOS) / tray app (Windows). You select text anywhere — Slack, Mail, VSCode, Notes, Chrome — press ⌃⌥T, the translation streams each token right next to the cursor. 2-3 seconds. No browser opening, no ChatGPT tab, no context-switching.

I built HotLingo because I was tired of having to open ChatGPT every time I needed to translate a sentence, paste it in, wait for a reply, and copy it back. A workday with EU/US clients means translating hundreds of times — accumulating to lose hours just for context-switching.

What HotLingo can do

- Translate selected text in any app using a hotkey

- Screenshot OCR → translate images on the spot — handles in-memory, does not save junk files

- Smart Context with 3 layers (persistent / per-message / per-screenshot) for accurate translations with technical context, business emails, casual chats

- Multi-provider: Google Translate (free, unlimited) / OpenAI / HotLingo AI credits — select based on your needs

- 100+ languages, prioritizing Vietnamese ↔ English

- History of the last 50 translations, searchable

- Bilingual UI in Vietnamese + English

Tech & spec

- macOS: Swift 5.9 + pure SwiftUI, Apple Vision OCR — zero dependencies, ~10MB

- Windows: .NET 8 + WPF, OCR + global hotkeys

- Backend: Supabase (auth + credits + payments) + SSE streaming

- Requirements: macOS 13+ (Ventura or later) or Windows 10/11

The free tier is available immediately, no registration needed. The paid tier unlocks AI translation with smart context for more accurate translations.

Who is the app for?

Developers, freelancers, salespeople, customer support, content creators, students — anyone using macOS/Windows and needing quick translations daily without having to open another ChatGPT/Google Translate tab.

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Download for free at 👉 https://www.hotlingo.vn/