I've just fixed that and it's in the development app loader, so you can check out how it gets the higher frequency by poking the accelerometer itself - right now it runs at 100Hz but you might be able to push it higher.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Ahh, right - I was thinking of https://banglejs.com/apps/?id=accelrec but that's only available on Bangle.js 1 at the moment.
I've just fixed that and it's in the development app loader, so you can check out how it gets the higher frequency by poking the accelerometer itself - right now it runs at 100Hz but you might be able to push it higher.