Language Switcher

1.5.0

Language Switcher fixes words typed in the wrong keyboard layout and switches the layout for you. Free, native, no account.

Typed "ghbdtn" instead of "привет"? At the first space Language Switcher replaces the word and switches to the right layout. It checks the macOS dictionaries and letter-pair frequencies, and never touches a correct word.

Everything stays on your Mac: no network, no account, no telemetry. Interface in Russian.

Features

Correction

Automatic and careful

The word is fixed at a space, punctuation or Return. Valid words, camelCase names and brands like iPhone are never changed.

Undo

Backspace

Backspace right after a fix restores the original word and layout. The word is remembered and never fixed again.

Manual

Double Shift

Press Shift twice to convert the current word, the last word or the selected text.

Reliability

No lost keystrokes

Keys typed during a replacement are held and replayed in order afterwards.

Typos

Russian fixed

"првиет" becomes "привет"; unknown words like "кринж" are left alone. Lone letters too: "z ntcn" → "я тест".

Control

Exclusions

Turn it off per app (terminals excluded by default), keep a list of words to leave alone, start at login.

What’s new

Version 1.5.0, 31 October 2026

Short common words are fixed using the sentence around them ("ye" → "ну", "pf" → "за", "шт" → "in"), and so are words ending in ё, ю, б, ж, э, х ("ещё", "всю", "веб").
The mid-word switch fires more often and earlier, based on how often words really start with those letters; if it turns out wrong at the end of the word, it is undone automatically.
Acronyms typed in the wrong layout ("ЧЬД" → XML) are fixed. On 75,000 words of real messages: 99% of wrong-layout words fixed.

Installation

1
Download and drag
Open the DMG and drag Language Switcher into Applications.
2
Confirm the first launch
The app is signed by its author but not notarized by Apple: System Settings → Privacy & Security → "Open Anyway".
3
Allow Accessibility
Turn on Language Switcher in System Settings → Privacy & Security → Accessibility. The menu bar icon then shows the active layout.

Questions and answers

Which layouts?

Any two layouts you pick; dictionary and frequency detection is most accurate for Russian and English.

Why Accessibility?

To read keys and retype the fixed word. Nothing is stored or sent.

Which Macs?

macOS 13 or later, Apple Silicon and Intel.

Does it cost anything?

No, the app is free.

How do I check the downloaded file?

In Terminal, run the command below and compare the result with the SHA-256 fingerprint on the right. If a single character differs, do not open the file and write to us.

shasum -a 256 ~/Downloads/LanguageSwitcher-1.5.0-universal.dmg