Minimizing the foreground app before the overlay makes sense if some games won't show popups on top. The voice calibration is the other key choice here: quiet, normal speech, then one yell gives the threshold a better shot at matching the person and the room.

S.TFU
A Windows tray app that interrupts you when you yell by measuring your voice threshold on first run.
5 ratings3.69
Saves76
CategoryProductivity
PlatformWeb
PricingFree
S.TFU is a Windows tray application designed to detect and interrupt when the user yells. It calibrates to your voice on first run to set a personalized volume threshold and reacts with escalating notifications including minimizing foreground windows, playing sound effects, and showing on-screen overlays. The app is intended for scenarios like gaming, where sudden loud shouts can disturb others. It logs events and offers customizable settings, including scheduling and sound/image customization. It respects privacy by not recording or transmitting audio.
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CategoryProductivity
PlatformsWeb
PricingFree
AccountNot confirmed
ListedAugust 2026
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