oncut apps • windows utility
oncut KeyLang
Smart Keyboard Language Monitor
Fix your layout before it betrays you. KeyLang watches your keyboard and warns you the moment you type on the wrong layout, then switches it with a single click. It runs quietly in the system tray, and everything stays on your device.
Windows 10 and 11 • one-time license • no subscription
One recognised word is enough to trigger the warning.
features
Everything it does, and nothing you don't want
Early wrong-layout warning
Reliable, early alert based on bundled word lists. Greek, Russian and Hebrew, each paired with English, in both directions.
One-click switch
When a warning appears, one click on the pop-up switches the keyboard layout for you. Correct typing never warns.
Your own alert sounds
Six sound samples that play even when Windows notification sounds are off, with volume control and a system-sound option.
Dark, light or system theme
A small settings dialog opened from the tray, styled to match your desktop.
Quiet by design
Runs in the system tray with no window of its own. Optional start with Windows, and a single-instance guard.
Stays on your device
Everything runs locally, in memory, in real time. KeyLang makes no automatic network connections and never transmits what you type.
how it works
It reads both layouts at once
Because the Greek and US layouts share the same physical keys, KeyLang transliterates each character to what the same key would produce on the other layout, then checks both readings against bundled word lists. Type hello with the Greek layout on and it comes out as ηελλο; transliterated back to US keys that is hello, a real English word, so you meant English.
One recognised word is enough, so the warning appears after a single word, in both directions. The same approach works for Russian and Hebrew, whose standard layouts share the US physical keys the same way. Correct typing never warns, and detection resets when you switch windows.
For the informational "current language" readout, KeyLang embeds Facebook's fastText language model inside the executable, so there is no Python dependency and no external model file to ship.
a look inside
Screenshots
pricing
One license, no subscription
Pricing coming soon
one-time payment for oncut KeyLang on Windows
- + Lifetime license for v1
- + All languages (Greek, Russian, Hebrew)
- + Email support at support@oncut.gr
- + Optional machine-locked key
Payments are processed securely by Stripe.
faq
Questions
Which languages does it cover? +
Greek, Russian and Hebrew, each paired with English. Their standard layouts share the US physical keys, which is what makes reliable detection possible in both directions.
Does it send my keystrokes anywhere? +
No. All processing happens locally on your computer, in memory. KeyLang makes no automatic network connections and never receives, stores, or transmits the content of what you type. See the Privacy Policy for details.
Which operating system is supported? +
KeyLang v1 is Windows-only (Windows 10 and 11). It runs from the system tray.
Is it a subscription? +
No. It is a one-time license, with no recurring charges.
How is my license delivered? +
After you complete the purchase through Stripe you receive your license key by email. You can optionally request a license locked to a specific machine.
get in touch
Contact
Questions about oncut KeyLang, licensing, or a purchase? Send us a message and we'll get back to you.
- support
- support@oncut.gr
- location
- Athens, Greece