Why is there then in the settings for Rapid the Low Time Warning??? Shouldn't be there if it does have no effect.... Clear up your mind Chess.com makers...
Low time warning
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10 days ago
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#23
I just created a free chrome extension for low time alerts.
It has:
- Custom low time notifications with a few different sounds
- Optional 5 second countdown
- Optional screen flash if you're hard of hearing
You can find it here: https://chromewebstore.google.com/detail/chesscom-low-time-alerts/ndfkkhkkmekhknheeoecnkogaodjecmd
Hopefully this is helpful for you 
For fast gameplay with increments, like a 2-minute game with 1-second increments, imagine a fast beeping sound, similar to the escalating beeps in submarines as a missile approaches its target.
As the timer ticks down, the beeps get closer and closer together until, at 0 seconds, it becomes a single continuous tone.
When you're making rapid moves and relying on those 1-second increments to stay in the game, it's easy to lose track of time. But with the beeping sound, you're constantly reminded of how much time remains without having to check the clock.
If you're accumulating extra seconds through quick moves, the sound reflects that. For instance, with 30 seconds left, you might hear one beep every 5 seconds; with 15 seconds left, it becomes two beeps every 5 seconds.
As the clock winds down to 0, the beeps happen with increasing frequency.
It would also be great to have the option to customize the beeping pattern by selecting a curve that defines how the beeps progress.